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Mid Term Study Guide 6th Grade PSI Science Name ____________________________________ Major Concepts: 1) What is a star? 2) What is a planet? 3) What is an orbit? 4) What is a revolution? 5) What is a solar system? 6) What is a galaxy? 7) What is the universe? 8) What is the Big Bang Theory? (not the television show) 9) What is a solar eclipse? 10) What is a lunar eclipse? 11) What causes the seasons? 12) How does the surface of Earth get energy from the sun? 13) How does the surface of Earth get energy from inside itself? 14) What is Pangaea? 15) Why does Pangaea no longer exist? 16) What evidence is there to support that Pangaea did exist? 17) What is the water cycle? 18) What are the two driving forces in the water cycle? 19) What two factors cause ocean currents? 20) What is erosion and how does it occur? Multiple Choice: 1) How often does the Earth take to orbit the sun? a) 1 hour b) 1 day c) 1 month d) 1 year 2) Which of the following is true? a) Earth is the center of the universe and does not move b) The sun is the center of the universe and does not move c) All objects in the universe are stationary d) Stars and galaxies follow predictable paths www.njctl.org 6th Grade PSI Mid-Term Study Guide 3) Which of the following is true of the Earth? a) Earth is part of a solar system with the Sun at its center b) The Earth’s solar system is part of the Milky Way galaxy c) The Milky Way is part of the universe. d) All of the above are true 4) The Big Bang Theory helps explain which of the following? a) Galaxies and stars move away from each other b) Galaxies and stars move toward each other c) Galaxies and stars move in random directions d) Earth is the center of the universe 5) Which of the following planets is the largest? a) Mars b) Jupiter c) Saturn d) Uranus 6) Which of the following was once but is no longer considered to be a planet? a. Earth b. the moon c. Pluto d. Haley’s Comet 7) When is a total lunar eclipse most likely to happen? a. during the day b. during a full moon c. during a new moon d. during a crescent moon 8) What causes the seasons? a. Tides b. Phases of the moon c. Tilt of the Earth d. Length of a year 9) What causes tides? a. Position of the moon b. Phases of the moon c. Tilt of the Earth d. Wind gusts www.njctl.org 6th Grade PSI Mid-Term Study Guide 10) Which of the following is a result of gravity? a. Formation of a galaxy b. Formation of a solar system c. Formation of a planet d. All of the above are correct 11) Increasing the amount of solar energy that reaches Earth’s surface could cause which of the following? a. More earthquakes b. Warmer summers and winters c. Cooler summers and winters d. More powerful volcanoes 12) Which of the following is an example of biological weathering? a. An iceberg carves out a canyon as it moves b. Plants growing along a canyon make the canyon wider over hundreds of years c. Acid rain dissolves limestone over time d. Freezing water expands inside of cracks in rock and breaks the rock apart 13) Why do sedimentary rocks sometimes contain fossils? a. The animals and plants grew in the rock b. The animals and plants were trapped during a rock slide c. The animals and plants were trapped before the rocks were formed d. Sedimentary rocks to not contain fossils. 14) Why does oceanic crust get pulled below the continental crust when the two collide? a. Oceanic is thinner and denser so it sinks more easily b. Continental is denser so it rises above c. Oceanic is weighed down by the water above it d. Continental crust is below the oceanic crust 15) Fossils provide the best evidence for which of the following? a. Plants on the surface of Earth are not very old b. Cavemen hunted dinosaurs c. Tides d. There once was a supercontinent known as Pangaea www.njctl.org 6th Grade PSI Mid-Term Study Guide 16) In general, where are older layers of rock when looking at sample rock strata? a. Just at the top b. In the middle c. Top and bottom d. Bottom 17) Which of the following helps determine the age of a rock layer? a. The type of rock b. The color of the rock c. The thickness of the rock d. Index fossils in the rock 18) Which of the following is the correct order for the water cycle? a. Condensation precipitation evaporation b. Precipitation condensation evaporation c. Evaporation precipitation condensation d. Condensation evaporation precipitation 19) Which of the following are ways water may be stored during the water cycle? a. as a gas b. as a gas and a liquid c. as a liquid and sold d. as a gas, a liquid, and a sold 20) Which of the following is NOT caused by solar energy in the water cycle? a. solar energy causes ice to melt b. solar energy causes water vapor to condense into clouds c. solar energy causes liquid water to evaporate d. solar energy causes winds that move clouds across the sky 21) Runoff may be caused by which of the following? a. Gravity b. Evaporation c. Sunlight d. Condensation www.njctl.org 6th Grade PSI Mid-Term Study Guide 22) What factor other than wind affects surface currents? a. Temperature b. Boats c. Fish movement d. Storms 23) What factor most greatly affects deep sea currents a. Surface weather b. Boats c. Salinity d. Earthquakes 24) During what kind of weather is erosion going to be least? a. Cold, calm day b. Hot, windy day c. A hurricane d. Warm, rainy day with little wind 25) Which of the following is an effect of erosion? a. New rocks form b. Mountains grow from hills c. Topsoil may be washed away making it harder for plants to grow d. All of the above are correct Free Response 1. What evidence is there that Earth orbits around the sun and not the sun orbiting around the Earth? 2. What objects may be found in the solar system besides planets? 3.Which are more suitable for sustaining life: Gas giants or Terrestrial planets? Explain. 4. What are the three criteria for being considered a planet? 5. What are the three main types of rocks and how do they form? 6. What is the difference between absolute age and relative age? 7. How does the water cycle allow ocean water to become drinkable water? 8. What are some common effects of erosion? www.njctl.org 6th Grade PSI Mid-Term Study Guide