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6th GRADE FINAL REVIEW 1) Which action in the science laboratory transforms chemical energy to heat energy? a. using a hot plate to boil a beaker of alcohol b. using a Bunsen burner to melt sulfur in a test tube c. growing potted plants near a window d. using a water heater element in a tropical fish aquarium 2) The Law of Conservation of Energy states that __________________ . a. energy is totally lost b. more energy is produced c. energy changes to matter like chemicals d. energy changes form, but is not lost or gained 3) Sally is roasting a marshmallow over a campfire on the end of a piece of wire. She knows that the energy from the fire causes the molecules in the end of the wire that are closest to the fire to move faster. These molecules transfer some of their extra kinetic energy to other molecules close by, and these, in turn, affect still more molecules. Sally knows that this method of energy transfer is a. b. c. d. Convection Condensation conduction radiation 4) flashlight battery : light :: food: _____________ a. b. c. d. energy to run potential energy convection fossil fuel 5) What is the final temperature of the water in the white jar? a. 28 ° C b. 31 ° C c. 33 ° C d. 34 ° C 6) USE THE GRAPH FOR THE FOLLOWING FIVE QUESTIONS. Jacob designed an experiment to see how the color of a surface affects the amount of heat absorbed. He filled 4 different colored beakers with 20 ° C water and exposed them to a heat source for 60 minutes. 6th GRADE FINAL REVIEW The graph illustrates Jacob’s data at the end of experiment. Which step should be Jacob’s last step in his experiment? a. Record the temperature of the water at 15minute intervals. b. Place the beakers 10 centimeters from a heat lamp. c. Measure the initial temperature of the water. d. Cover one beaker with white paper, one beaker with gray paper, one beaker with black paper and leave one jar uncovered. 7) Why did Jacob include a beaker that he did not cover with paper? a. He wanted to be able to observe all changes to the water. b. There wasn’t another color available to test. c. The clear beaker is the control; the results can be compared to it. d. He knew the heat lamp would change the water temperature. 8) What is the BEST title for Jacob’s graph? a. Colors Matter b. How The Color Of Container Affects Energy Transfer c. The Four Jar Experiment d. Why Does Water Heat Up in different Types of Containers? 9) Luis is investigating how heat moves. He heated a nail to 100 ° C and placed it into 250 mL of 20 ° C water. What is the most likely temperature of the water and the nail in 10 minutes? a. The water is 10 ° C and the nail is 110 ° C. b. The water is 40 ° C and the nail is 40 ° C. c. The water is 70 ° C and the nail is 40 ° C. d. The water is 100 ° C and the nail is 70 ° C. 10) Jacob is standing with his back facing a campfire. He notices that his back is much warmer than his chest. He knows that heat energy is being transferred from the fire and that this method of energy transfer can happen even if no air is present. This method of energy transfer is 6th GRADE FINAL REVIEW a. b. c. d. convection condensation conduction radiation 11) Bobby is drinking a cup of hot chocolate as he sits by a campfire on a chilly evening. He knows that the cup of hot chocolate transfers thermal energy to the surrounding air. The heated air over his cup of hot chocolate expands and rises and is replaced by cooler, denser, air. This method of energy transfer is _________________ . a. convection b. condensation c. conduction d. radiation 12) Two friends decide to go to the 10park and watch a movie on a computer. The computer runs off battery power. What energy conversion is occurring from the battery to the light being given off by the computer? a. chemical, electrical, light b. chemical, electrical, sound c. electrical, light, sound d. electrical, chemical, light a. An ice cube is placed onto a hot pan that is sitting on the counter top. How will the heat energy move? a. The coldness will move from the pan to the ice cube. b. The coldness will move from the ice cube to the pan. c. The heat will travel from the pan to the ice cube. d. The heat will move from the ice cube to the pan. 13) The graph above shows the distance and time a cyclist traveled on a 4.0 hour ride. Which of the following statements is TRUE based on the graph data? a. The average speed of the cyclist in the first two hours was 15.0 km/hr. b. The cyclist traveled at a constant speed throughout the ride. 6th GRADE FINAL REVIEW c. The fastest speed of the cyclist was in the last hour of the ride. d. Between the second and third hour of the ride, the cyclist traveled 30 km. d. The distance the moving object travels is the same for each second. 15) A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student? 14) The graph above shows the position of a moving object from 0 to 5 seconds. Which of the following statements is TRUE for the moving object? a. The moving object is accelerating and changing its speed throughout the measurement. b. The moving object is traveling at a constant speed throughout the measurement. c. The moving object is slowing down, and finally stops at the 5second mark. a. b. c. d. 1.5 km/h 7.0 km/hr 13.0 km/hr 30.0 km/hr 16) The energy related to the motion of an object is called— a. b. c. d. potential energy kinetic energy electrical energy chemical energy USE THE FOLLOWING MODEL OF A ROLLER COASTER FOR THE NEXT TWO QUESTIONS. 6th GRADE FINAL REVIEW 19) 17) At what point would the Speedy roller coaster car have the most kinetic energy? a. 3 b. 4 c. 5 d. 6 18) At what point would the Speedy roller coaster car have the most potential energy? a. b. c. d. 3 4 5 6 Students in a physics class placed a steel ball at the top of a long ramp. As the ball rolled down the ramp, the students measured the distance the ball had traveled at various times. The graph above is a record of their measurements. What is the AVERAGE speed of the steel ball between 1 second and 3 seconds of the investigation? a. 1 m/s b. 3 m/s c. 6 m/s d. 7 m/s 20) What is the AVERAGE speed of the steel ball between 3 seconds and 5 seconds of the investigation? a. 2.0 m/s b. 4.0 m/s c. 6.5 m/s d. 14.0 m/s 6th GRADE FINAL REVIEW 21) What unbalanced force is affecting the steel ball the most, and how is it affecting the ball's motion? a. Friction with the ramp is the greatest unbalanced force, and it is causing the ball to slow down. b. Friction with the air is the greatest unbalanced force, and it is causing the ball to slow down. c. Gravity is the greatest unbalanced force, and it is causing the ball to speed up. d. The initial push of the ball is the greatest unbalanced force, and it is causing the ball to speed up 22) Devon wants to know how mass affects the speed of a cart moving down an inclined plane. Which two experimental setups should Devon use? a) b) c) d) 23) Which pulley system requires the least amount of force to raise the 10g mass? a) 6th GRADE FINAL REVIEW b) Using the terms DISTANCE, TIME and SPEED, describe the motion of the moving object. c) 25) Stephanie drops a super bouncy ball from her hand. Compare how much kinetic energy and potential energy the ball has at each point and describe why the ball has that energy. d) 24) The graph above shows the distance in meters a moving object travels from 0 to 5 seconds. 26) A rocky object that measures 50 miles across is observed in space. It rotates once every 18 hours. The object is three times farther from the Sun than Earth. The rocky object is MOST likely— 6th GRADE FINAL REVIEW a. b. c. d. Venus. The Moon. Mars. An asteroid. 27) Mars is very similar to the Earth. Which of these is a property of the Earth, but NOT a property of Mars? a. Mars has an abundance of water. b. Mars has moons that orbit it. c. Mars is constantly in motion. d. Mars has a predictable path. 28) A probe is a vehicle designed to carry instruments, but not crew. To which of the following places would we MOST LIKELY send a probe? a. the International Space Station b. inside the Sun c. mountain top d. Saturn 29) The Sun is the center of our solar system, and creates a large amount of gravitational force. If this system lost the Sun, what would happen to the planets? a. The planets would explode. b. The planets would stop moving. c. The planets would travel in a straight line. d. The planets would continue on their same path. 30) All of the planets in our solar system have about the same— a. mass. b. diameter. c. shape. d. composition. 31) Over time, NASA has developed many different vehicles to carry men and women into space. These craft have changed to allow longer stays in space, carry more astronauts and conduct more investigations. Until recently, the U.S. has used the space shuttle. The space shuttle differed from previous space vehicles because it— 6th GRADE FINAL REVIEW a. was reusable. b. could carry more than one person. c. could travel beyond Earth's orbit. d. was airtight. 32) Which of the following is the description for the orbit paths of most planets in our solar system? a. Its movement is in a perfect circle. b. Its movement is in an ellipse, but looks almost circular. c. Its movement is in a large elliptical shape. d. Its movement varies greatly from planet to planet. 34) Space shuttle missions last about one week. A manned mission to Mars could last six months or longer. Describe four ways a manned mission to Mars would differ from a space shuttle mission in terms of the supplies, equipment, or transportation needed. 33) How did the discovery of the Galilean moons change how humans perceived the Universe? a. It allowed us to honor the famous scientist, Galileo. b. We could see that there was other life in the solar system. c. It gave us proof that not everything orbited around the Earth. d. It allowed for us to study how ice moves in other places of the solar system. The diagram above shows some numbered stages in the rock cycle. The rock cycle shows how the three types of rocks can change from one type to another. 6th GRADE FINAL REVIEW 35) What process is occurring at arrow 1? a. cementation b. melting c. cooling d. Weathering 36) USE THE FOLLOWING INFORMATION FOR THE NEXT TWO QUESTIONS. Jackie wanted to make a model of the Earth. She decided to cut a giant styrofoam ball in half and paint the layers on it to show their thickness. Which image is the best representation of the layers of the Earth? a) b) c) d) 37) All of the following are limitations of the model in the previous question EXCEPT? a. the size of the Earth b. the materials it is made from c. the scale of the layers d. the state of matter 38) Leslie is building a model of the layers of the Earth. Which material would best represent the crust? a. grouping of magnetic balls b. styrofoam packing pellets c. bag of shredded paper d. thin layer of plaster 39) Amy’s mom made lemon drop candy by melting sugar, water, and lemon flavoring in a sauce pan until the mixture was at a very high temperature. She then poured the clear yellow mixture onto a baking sheet until it was cool. The process of making lemon drop candy is most like the formation of what type of rock? 6th GRADE FINAL REVIEW a. b. c. d. igneous metamorphic sedimentary conglomerate 40) Intrusive igneous rocks are igneous rocks that cool inside the Earth. Which of these is used to identify intrusive igneous rocks? a. small crystals b. large crystals c. foliated bands d. particles of other rocks 41) Your teacher has asked you to make a model of the interior of the Earth. In your model, how do the thicknesses of the lithosphere and crust compare? a. The lithosphere is thinner than the crust. b. The lithosphere is exactly the same thickness as the crust. c. The lithosphere is thicker than the crust. d. The lithosphere is thicker than the oceanic crust, but thinner than the continental crust. 42) A rock is sitting on the surface of the Earth. The rock is then pushed down deep into the Earth where it is exposed to tremendous pressure and some heat. Even though the rock does not melt, the rock does change. What type of rock is it now? a. b. c. d. intrusive igneous rock extrusive igneous rock metamorphic rock sedimentary rock 43) Susan’s mom made peanut butter bars by pressing a layer of graham cracker crumbs into a baking pan. She then added a layer of a peanut butter mixture and then added a layer of crushed peanuts. She topped that by adding a layer of chocolate frosting. The process of making peanut butter bars is most like the formation of what type of rock? a. b. c. d. igneous metamorphic sedimentary heterotrophic 44) Some people use an apple to represent the Earth. What is the best reason to use an apple for this comparison? 6th GRADE FINAL REVIEW a. The skin of an apple is very thin, and the crust of the Earth is very thin. b. The flesh of an apple is made of the same material all the way through, and the interior of the Earth is the same all the way through. 45) Describe the steps, in order, that a sedimentary rock would undergo to change to a metamorphic rock, then to an igneous rock. c. The seeds of the apple are very light in comparison to the rest of the apple, and the core of the Earth is also made of very light matter. d. The stem of the apple comes from the core and the North Pole comes from the Earth’s core. 46) The map above shows three mountain ranges in the United States. Which of the following would be the best way to model how the mountains formed? a. drop pennies into a pile b. shake a soda bottle until the soda shoots up c. drip water on the sides of a sugar cube d. push two towels together 6th GRADE FINAL REVIEW 47) When the edges of tectonic plates shift and energy is released, what is the result? a. earthquakes b. hurricanes c. tornadoes d. glaciers 48) According to the theory of Plate Tectonics, where do most active volcanoes occur? a. b. c. d. on continental plates along plate boundaries on oceanic plates underwater 49) What evidence supports the theory of plate tectonics? a. matching mountain ranges on the North American and Eurasian Plates b. people of similar culture and language on the Pacific and African Plates c. sand with similar composition under the Pacific and Eurasian Plates d. similar seasonal plants currently found on the North American and South American Plates 50) Which scientist is known for proposing the idea of moving tectonic plates? a. b. c. d. Alfred Einstein Ernest Rutherford Alfred Wegener Edwin Hubble 51) A common science model of a volcano is made by filling a cone with baking soda. When vinegar is added into the cone, it reacts with the baking soda. The chemical reaction causes watery foam to ooze out of the cone. What is one limitation of using this as a model of a volcano? a. This model is small enough to allow students to view the movement of the lava. b. The eruption of an actual volcano is a random event, so it can be difficult to observe. c. The model of the volcano does not include actual details of why eruptions happen. d. It would be unsafe for students to study the details of an actual eruption. 6th GRADE FINAL REVIEW 52) Watson is a computer developed by IBM. Watson became famous when it beat two people on the game show “Jeopardy!" What is the main difference between Watson and the two people on the game show? a. Watson used logic to find the right question. b. The two people can access their memories. c. Watson requires energy. d. The two people are composed of cells. 53) What do a mushroom, an amoeba, and a 6th grader have in common? a. They all belong to the Animal Kingdom. b. They are all composed of one or more cells. c. They are composed solely of gases and liquids. d. They are all classified as invertebrates. 54) What is a reason that fire is not considered a living organism? a. It requires oxygen to burn. b. It requires fuel to burn. c. It can move from place to place. d. It is not composed of cells. 55) Which group is the broadest group in the modern classification system? a. b. c. d. kingdom phylum class domain 56) What do the domains bacteria and archaea have in common? a. They both contain organisms composed of cells that are classified as prokaryotes. b. They both contain organism composed of cells that are classified as plants. c. They both contain organisms d. They both contain organisms composed of cells that are classified as animals. 57) Which pair of words best completes this analogy? cell : organism :: __________ : __________ 6th GRADE FINAL REVIEW a. b. c. d. atom : compound nail : house paper : library sand : ocean 60) Which domain does a person belong to? a. archaea b. bacteria c. eukarya d. fungi 58) Courtney saw a cell under a microscope and drew what she saw. This cell is classified as — a. b. c. d. 59) prokaryotic eukaryotic periodic nucleotic This cell is classified as a. b. c. d. prokaryotic eukaryotic periodic nucleotic 61) Carolus Linnaeus developed the system for naming and classifying organisms. Why is having a common naming system important? a. Scientists can communicate about experiments and theories about organisms. b. Scientists can determine the order of importance of the parts of a cell. c. Scientists can agree on the order of events as plants and animals change over time. d. Scientists can determine the number of organisms it takes to complete a phylum. 6th GRADE FINAL REVIEW 62) Which domain is unique because all of the members have cells that contain a nucleus? a. b. c. d. archaea bacteria eukarya fungi 63) What are the names of the three domains? a. plants, animals, bacteria b. animal, vegetable, mineral c. archaea, bacteria, and eukarya d. fungi, bacteria, animal a. The lines used to label structures should not cross. b. There should be fewer details. c. The drawing should be the same size as the organism. d. There should be fewer structures labeled. 65) Amanda is using a microscope to view prepared slides of cells. What is important to remember when using a microscope? a. Wear safety goggles when focusing the microscope. b. Use both hands when carrying the microscope. Use latex gloves when handling a slide. c. Wear a chemical apron when preparing a slide. 66) An organism that can make its own food and is composed of many cells that each contain a nucleus belongs to which kingdom? 64) How could this scientific drawing of a cell be improved? a. b. c. d. Plantae Animalia Fungi Bacteria 6th GRADE FINAL REVIEW d. Fungi 67) Anthony saw this image in his microscope. In what kingdom does this cell likely belong? a. b. c. d. Plantae Animalia Fungi Bacteria 68) Sarah saw this image in her microscope. 69) In which shaded section does an oak tree belong? a) b) c) In what kingdom does this cell likely belong? a. Animalia b. Bacteria c. Plantae d) 6th GRADE FINAL REVIEW 70) What word best replaces the X on the diagram? a. b. c. d. abiotic photosynthetic biotic chemosynthetic 71) In which shaded section do minerals belong? a) b) c) 74) classroom : population :: school : ___________ a. b. c. d. organism species tissue community 75) Soil contains both abiotic and biotic materials. Which is a biotic component of soil? a. b. c. d. minerals grains of sand decomposing leaves water d) 72) What word best replaces the Y on the diagram? a. abiotic b. photosynthetic c. biotic d. chemosynthetic 73) Which pair best matches this pair of words? book – library a. living – nonliving b. organism – ecosystem c. theory – law d. hydrogen – oxygen 76) Which factor in a penguin’s environment is abiotic? a. b. c. d. iceberg killer whale krill phytoplankton 77) A rabbit’s grassland community includes a. field mice. b. rocks. c. warm spring temperatures. d. rainfall. 6th GRADE FINAL REVIEW 78) How is motion defined? a. a change in the position of an object b. a change of an object’s position over time c. the speed of an object d. the acceleration of an object 79) What reference point is used to define position? a. the location of the object being observed b. any point c. the observer’s location d. There is no reference point. 80) What is used to describe motion? a. reference position b. reference frame c. frame of position d. frame of reference 81) What changes when an object is in motion compared to when it is not? a. its speed b. its position and speed c. its position d. its frame of reference 82) How does the mass of an object affect the motion produced by a given amount of force? a. As the mass decreases, the speed decreases. b. As the mass increases, the speed decreases. c. As the mass increases, the speed increases. d. As the mass decreases, the speed is constant. 83) What term is used to describe total distance divided by the time required to move that distance? a. inertia b. speed c. average speed d. velocity 84) What is the term for the property of an object that opposes a change in motion? a. b. c. d. inertia speed mass resistance a. b. c. d. What is a force? a push a pull or a push a pull energy 85) 6th GRADE FINAL REVIEW 86) Write short answers to the following questions. You are in your room observing a book on a table in the room. What can you say about the motion of the book? 87) You are in a car and you observe an object outside the car. The object appears to remain beside you. What can you say about the motion of the car you are in and the motion of the object? 88) A battery produces electrical energy from a. chemical energy. b. radiant energy. c. thermal energy. d. mechanical energy. 89) The difference between primary cells and storage cells is that storage cells a. can be used only once. b. can be recharged. c. produce only chemical energy. d. contain several primary cells. 90) In photosynthesis, energy from the sun is changed to a. carbon dioxide. b. chlorophyll. c. chemical energy. d. thermal energy. 91) In an automobile engine, the chemical energy of fuel is converted to a. more chemical energy. b. mechanical energy. c. potential energy. d. electromagnetic energy. 92) In a swinging pendulum, where is the kinetic energy the greatest? a. at the top of the swing b. at the bottom of the swing c. Nowhere, the kinetic energy is always the same. d. at the point where the potential energy is greatest 93) A skier’s potential energy at the top of a ski jump is the result of a. heat. b. kinetic energy. c. gravity. d. the Sun. 6th GRADE FINAL REVIEW 94) When water from behind a dam runs downhill through turbines, the kinetic energy of the moving water changes to a. kinetic energy of the turbines. b. potential energy of the water. c. thermal energy of the turbines. d. the temperature of the water. 95) Energy can change from one form to another, but energy is never a. converted. b. lost. c. kinetic. d. stored. 96) What energy conversion takes place in solar cells? 97) Describe how the kinetic and potential energy of a pendulum change as the pendulum swings downward. 98) What is the SI base unit for length? a. meter b. foot c. kilometer d. mile Use the following information to answer questions 2–4. 99) Kylee is keeping a weather notebook. Each day she records the outside weather conditions in SI units. Today Kylee had to wipe the ice off the thermometer to read the temperature. Which of these temperatures is most likely the temperature Kylee observed and recorded? a. b. c. d. 0 °C 5 °C 12 °C 32 °C 100) Yesterday, Kylee did not have a thermometer with her. Which of the following best represents qualitative temperature data? 6th GRADE FINAL REVIEW a. It seems to be about 7°. b. The geese are huddled together on a patch of ice in the pond. The ice on the trees in the sun is melting. c. Ice melts at 0°C. d. Because the sun is shining, I estimate the temperature at 10°C. 101) Sharif’s assignment includes finding the density of a substance. Which properties and units does he need to find first? a. mass, kilometers; volume, cm3 b. weight, kilograms; volume, mL c. mass, grams; volume, cm3 d. weight, grams; volume, mL 102) Tracy is using NASA’s scientific data to determine the speed of a rocket that went to Mars. Which of the following are the units she most likely will use? a. kilometers per hour b. miles per hour c. miles per second d. kilometers per second 103) What is the SI base unit for mass? a. gram b. kilogram c. pound d. Newton 104) Which of the following is a characteristic of a physical model? a. A physical model can help you to visualize a scientific process. b. A physical model can make a very small object large enough to study. c. A physical model can make a very large object small enough to study. d. all of the above 105) A peach can be a good model of Earth’s layers. What does the skin of the peach represent? a. Earth’s crust b. Earth’s mantle c. Earth’s outer core d. Earth’s inner core 6th GRADE FINAL REVIEW 106) What can a model made from a balloon with dots on it teach you about the universe? a. The universe is limited. b. The Milky Way is our galaxy. c. Objects in the universe are growing closer together. d. The universe is expanding. 107) In the balloon model of the universe, what do the dots on the balloon represent? a. galaxies b. planets c. neighboring universes d. solar systems 108) What are organisms with more than one cell called? a. multicellular organisms b. unicellular organisms c. animalcules d. protists 109) Which is a key part of the cell theory? a. All organisms are made of more than one cell. b. Only animal tissues are made of cells. c. The cell is the basic unit of all matter. d. Cells can form only from other cells. 110) What invention was necessary for discovering cells? a. the electric light b. the x-ray device c. the microscope d. the telescope 111) What is each individual cell able to do? a. all of the processes necessary for life b. one of the processes necessary for life c. none of the processes necessary for life d. some of the processes necessary for life 112) How are plant cells different from animal cells? a. Plant cells have cell walls; animal cells do not. b. Plant cells are filled with fluid; animal cells are not. c. Plant cells can be seen without a microscope; animal cells cannot. d. A plant cell can perform all the processes necessary for life; an animal cell cannot. 6th GRADE FINAL REVIEW 113) Where are cells found in a plant? a. only in the leaves b. in all parts of a plant c. all parts except the roots d. all parts except the stems 114) Write a short answer to the following question. How are the cells in the various parts of the human body different from one another? Give at least two examples of types of cells and how they are different. 115) What do all eukaryotic cells have in common? a. Genetic material is not held within a separate compartment. b. A nucleus holds all the genetic material. c. They have no genetic material. d. They have no cytoplasm. 116) Where are DNA molecules located within bacteria? a. within the cytoplasm b. inside a nucleus c. in the flagellum d. in ribosomes 117) How does the size of eukaryotic cells compare to prokaryotic cells? a. They are about the same size. b. Most prokaryotic cells are larger than eukaryotic cells. c. Most eukaryotic cells are larger than prokaryotic cells. d. Some eukaryotic cells are larger than prokaryotic cells, but some are smaller. 118) What type of cells make up all parts of the human body? a. prokaryotic cells b. eukaryotic cells c. archaea cells d. circular cells 6th GRADE FINAL REVIEW 119) What are the broadest groups in the taxonomy of organisms? a. kingdoms b. domains c. species d. families 123) Which kingdom is also a domain? a. Plantae b. Protista c. Bacteria d. Animalia 120) How are bacteria and archaea alike? a. Their cytoplasm contains no nucleus. b. They are within the same domain. c. They have tough cell walls. d. They have no ribosomes. 124) A new organism is discovered that is multicellular and has a nucleus, a cell wall, and chloroplasts that convert sunlight into energy. Which kingdom should this organism be placed in? a. Fungi b. Plantae c. Archaea d. Animalia 121) Which of these organisms are included within the domain Eukarya? a. prokaryotes b. bacteria c. archaea d. plants 122) Which feature of the paramecium places it within the domain Eukarya? a. A paramecium has a nucleus. b. A paramecium can live as a single cell. c. A paramecium has cilia that allow it to move. d. It has organelles that allow it to digest food and remove water and wastes. 125) What does kinetic energy depend on? a. Mass and volume b. Velocity and weight c. Weight and height d. Velocity and mass 126) Sam studied kinetic and potential energy by observing apples on a tree during a field investigation. What type of energy do these apples have? a. Kinetic energy b. Mechanical energy c. Gravitational potential energy d. Sound energy 6th GRADE FINAL REVIEW 127) Which of the following is NOT an example of potential energy? a. A ball traveling at 10 m/s b. A compressed spring c. Stress along a fault line d. A stretched rubber band 128) Which of the following always causes change in speed, direction, or both? a. Balanced forces b. Unbalanced forces c. Either balanced or unbalanced forces d. Any combination of forces 129) Which of the following statements correctly describes the force that propels the space shuttle upward during takeoff ? a. The gases push the shuttle upward with a force equal to the shuttle pushing the gases downward. b. The gases push downward with a force equal to the shuttle pushing the gases downward. c. The shuttle pushes upward with more force than the gases push downward. d. The shuttle pushes downward with more force than the gases push upward. 130) What happens if the forces on an object are unbalanced? a. Its motion will not change. b. Its motion will change. c. The object will stop moving. d. The forces will be zero. 131) Why is it useful to find the average speed of an object? a. Most things move with the same speed at all times. b. The speed of most things decreases at a constant rate. c. Most things do not move with the same speed at all times. d. The speed of most things increases at a constant rate. 6th GRADE FINAL REVIEW 132) How would you calculate your average speed if you walked from your house to your friend’s house two blocks away? a. Total distance divided by total time would equal my average speed. b. Total time divided by total distance would equal my average speed. c. Total distance times total time would equal my average speed. d. Total distance plus two divided by total time would equal my average speed. 133) An airplane traveling from San Francisco to Chicago flies 1,260 km in 3.5 hours. What is the airplane’s average speed? a. b. c. d. 420 km/h 360 km/h 500 km/h 300 km/h 134) Which of the following does NOT experience a change in velocity? a. A motorcyclist driving down a straight street applies the brakes. b. While maintaining the same speed and direction, an experimental car switches c. from gasoline to electric power. d. A baseball player running from first base to second base at 10 m/s comes to a stop in 1.5 seconds. e. A bus traveling at a constant speed turns a corner. 135) A meteorologist describes a tropical storm as traveling northwest at 50 mi/h. Which attribute of the storm’s motion has the meteorologist described? a. b. c. d. Force Acceleration Velocity Displacement 6th GRADE FINAL REVIEW 136) A machine that has a mechanical advantage of less than one a. increases distance. b. multiplies force. c. increases output force. d. reduces distance and speed. 137) A ramp is an example of which type of machine? a. b. c. d. A wedge A pulley An axle An inclined plane 138) What is the transfer of energy as heat through a material called? a. b. c. d. Thermal convection Thermal conduction Thermal radiation Thermal contact 139) Hot air is seen rising from the pavement on a hot summer day. Which of the following is this an example of? a. b. c. d. Thermal conduction Thermal insulation Convection Radiation 140) What is the rolling motion of boiling water an example of ? a. b. c. d. Conduction Radiation Convection Insulation 141) What is the transfer of energy between two objects that are at different temperatures called? a. b. c. d. Temperature conversion Heat Thermal expansion Thermal transfer 142) As a spoon in a bowl of hot soup becomes warmer, by which process is heat being transferred to the spoon? a. b. c. d. Convection Conduction Radiation Direct contact 6th GRADE FINAL REVIEW 143) Which of the following describes the flow of thermal energy that occurs as a student holds a piece of ice in her hand? a. Thermal energy flows from her hand to the ice cube. b. Thermal energy flows from the ice cube to her hand. c. Thermal energy flows back and forth between her hand and the ice cube. d. Thermal energy does not flow between objects at different temperatures. 144) Which device converts chemical energy into electrical energy? a. b. c. d. Lightning rod Battery cell Light bulb Switch 145) A hair dryer converts what type of energy into thermal energy? a. b. c. d. Kinetic Potential Electrical Chemical 146) What energy transfer happens when you plug in a blender? a. Electrical energy becomes light energy and sound energy b. Electrical energy becomes kinetic energy and sound energy c. Electrical energy becomes light energy and thermal energy d. Chemical energy becomes electrical energy 147) What type of energy is caused by the vibrating of your ear drum? a. b. c. d. Light energy Chemical energy Electrical energy Sound energy