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CRCT Question of the Day 1-5-11 Why don’t plants normally grow on the bottoms of deep lakes? A. The water is too salty. B. The water is too cold. C. Photosynthesis does not occur in water. D. There is not enough sunlight for photosynthesis to occur. Standard & Element – S6E3.a CRCT Question of the Day 1-6-11 Which of the following is an example of a point source of water pollution? A. Runoff of pesticides from wheat fields B. Salt spread on parking lots to melt ice C. Chemical flowing from a factory into a stream D. Fertilizer from corn fields that runs off into streams Standard & Element – S6E5.j CRCT Question of the Day 1-7-11 For a science project you must build a model of an aquifer. What material would be the best to use for the layer that will hold water? A. An impermeable material, such as clay B. An impermeable material, such as granite C. A permeable material, such as gravel D. A material that does not have pores Standard & Element – S6E3.a CRCT Question of the Day 1-10-11 A scientist plans to test the effect temperature has on the density of ocean water. What will the manipulated variable be in her experiment? A. Density B. Salinity C. Temperature D. Water depth Standard & Element – S6E3.c CRCT Question of the Day 1-11-11 In which of the following areas would the salinity of the ocean water be the highest? A. In a hot, dry area B. Near a rainy coastal area close to the equator C. At the mouth of a large river. D. In cold, deep water, near the ocean bottom Standard & Element – S6E3.c CRCT Question of the Day 1-12-11 A major warm ocean current flows along a coastal area. What type of climate would you most likely find in the area influenced by the current? A. Extremely hot and dry B. Cool and dry C. Extremely cool and wet D. Mild and wet Standard & Element – S6E3.d CRCT Question of the Day 1-13-11 What two gases make up approximately 99% of Earth’s atmosphere? A. Nitrogen and carbon dioxide B. Oxygen and carbon dioxide C. Nitrogen and hydrogen D. Nitrogen and oxygen Standard & Element – S6E4 CRCT Question of the Day 1-14-11 In the troposphere, as altitude increases A. Air pressure decreases. B. Temperature decreases. C. Air density decreases. D. All of the above Standard & Element – S6E6.a CRCT Question of the Day 1-18-11 What is the main method by which heat is transferred within the troposphere? A. Radiation B. Conduction C. Convection D. The Greenhouse effect Standard & Element – S6E6.a CRCT Question of the Day 1-19-11 The ozone layer is found in the A. Troposphere. B. Stratosphere. C. Mesosphere. D. Thermosphere. Standard & Element – S6E4 CRCT Question of the Day 1-20-11 How are air masses classified? A. By temperature and pressure B. By pressure and humidity C. By temperature and density D. By temperature and humidity Standard & Element – S6E4.a CRCT Question of the Day 1-21-11 A rapidly moving cold air mass meets a slowly moving warm air mass and forms a front. What will most likely occur at this front? A. The two air masses will mix together. B. The warm air will slide under the cold air. The cold air will rise and get warmer. C. Cold air will slide under the warm air. Warm air will rise and cool. Clouds will form. D. The less dense warm air will sink and cool. Clouds will form. Standard & Element – S6E4.a CRCT Question of the Day 1-24-11 Which of the following represents a sudden change in Earth’s atmosphere? A. The carbon cycle B. The nitrogen cycle C. A rain shower D. A dust storm Standard & Element – S6E4.a CRCT Question of the Day 1-25-11 The gas that makes up the largest percentage of the atmosphere’s substance is A. Nitrogen B. Oxygen C. Water vapor D. Carbon dioxide CRCT Question of the Day 1-26-11 In which of the atmosphere’s layers does temperature decrease as the altitude increases? A. The troposphere and the stratosphere B. The troposphere and the mesosphere C. The stratosphere and the mesosphere D. The stratosphere and the thermosphere CRCT Question of the Day 1-27-11 What are the three forms of water on Earth? A. Groundwater, lakes, and clouds B. Liquid water, frozen water, and water vapor C. Gas, steam, and vapor D. Groundwater, oceans, and ice CRCT Question of the Day 1-28-11 Which is a characteristic of a pond? A. Rooted plants covering the entire bottom B. Plants only near shore C. A layer of impermeable rock D. Water heated by underground rock CRCT Question of the Day 1-31-11 The term for pollution that can traced to a specific location is A. Water pollution B. Point-source pollution C. Nonpoint-source pollution D. Runoff pollution CRCT Question of the Day 2-1-11 How is water stored in an aquifer? A. In an open underground lake B. In cracks and spaces in rocks C. In impermeable rock D. In wells and springs CRCT Question of the Day 2-2-11 How are glaciers like rivers? A. They are made of liquid water. B. Their water sinks into the ground. C. They flow downhill. D. They are a mile thick. CRCT Question of the Day 2-3-11 How much of Earth’s water is fresh water? A. Almost all B. About half C. Very little D. none CRCT Question of the Day 2-4-11 What process forms clouds? A. Evaporation B. Precipitation C. Condensation D. dehydration CRCT Question of the Day 2-7-11 What two major factors are usually used to classify climates? A. Precipitation and altitude B. Temperature and air pressure C. Temperature and precipitation D. Air pressure and humidity CRCT Question of the Day 2-8-11 A rapidly moving cold air mass meets a slowly moving warm air mass and forms a front. What will most likely occur a this front? A. The two air masses will mix together. B. The warm air will slide under the cold air. The cold air will rise and get warmer. C. Cold air will slide under the warm air. Warm air will rise and cool. Clouds will form. D. The less dense warm air will sink and cool. Clouds will form. CRCT Question of the Day 2-9-11 Predict what type of climate would be the most likely in an area located in the interior of a large continent, on the east side of a major mountain range. Winds in the area commonly blow from west to east. A. Dry B. Polar C. Temperate marine D. Tropical rainy CRCT Question of the Day 2-10-11 What would a scientist usually do after conducting a controlled experiment? A. Interpret the data from the experiment B. Communicate the results of the experiment C. Draw a conclusion, and if needed, revise the hypothesis. D. All of the above CRCT Question of the Day 2-11-11 Scientific inquiry often begins with A. Drawing conclusions. B. Posing questions. C. Making models. D. Communicating results. CRCT Question of the Day 2-15-11 Which characteristic is used to determine the color of a mineral’s powder? A. Luster B. Fracture C. Cleavage D. Streak CRCT Question of the Day 2-16-11 A metamorphic rock in which the grains line up in parallel bands is a A. Clastic rock B. Nonclastic rock C. Nonfoliated rock D. Foliated rock CRCT Question of the Day 2-17-11 An igneous rock containing large crystals is most likely a(n) A. Chemical rock B. Extrusive rock C. Foliated rock D. Intrustive rock CRCT Question of the Day 2-22-11 Lines joining places that have the same temperature are A. Isobars B. Isotherms C. Fronts D. Occluded CRCT Question of the Day 2-24-11 Rolling waves with a large horizontal distance between crests have a long A. Wave height B. Wavelength C. Frequency D. Trough CRCT Question of the Day 2-25-11 The most abundant gas in the atmosphere is A. Ozone. B. Water vapor. C. Oxygen. D. Nitrogen. CRCT Question of the Day 2-28-11 What is the major result at Earth’s surface of ozone depletion in the stratosphere? A. An increase in the amount of ultraviolent radiation reaching the surface. B. A decrease in the amount of ultraviolent radiation reaching the surface C. An increase in global temperatures D. A decrease in global temperatures CRCT Question of the Day 3-1-11 Information about scientific theory would most likely be found under which heading in a table of contents? A. Laws of Motion B. Doctor’s Code of Ethics C. Repeated Tests Have Shown D. Mythology of Volcanoes CRCT Question of the Day 3-2-11 The continents and ocean basins are part of Earth’s A. Crust B. Mantle C. Outer core D. Inner core CRCT Question of the Day 3-3-11 How is it possible for two different minerals to have the same chemical composition? A. They have different crystal structures. B. One is formed only by organism. C. Only one is a rock-forming mineral. D. They have different appearances. CRCT Question of the Day 3-4-11 The movement of air molecules causes A. Air density B. Air pressure C. Humidity D. Relative humidity CRCT Question of the Day 3-7-11 What ice formation covers Greenland and Antarctica? Iceberg B. Landmass C. Valley glacier D. Continental glacier A. CRCT Question of the Day 3-8-11 Two kinds of wetlands that border estuaries are Coral reefs and mangrove forests B. Salt marshes and mangrove forests C. Tidal pools and salt marshes D. Mangrove forests and tidal pools A. CRCT Question of the Day 3-9-11 Which of the following best describes Earth’s mantle The B. The C. The D. The A. denest of Earth’s layers home of all life on Earth thickest layer of hot rock thinnest and hottest layer CRCT Question of the Day 3-10-11 Tectonics plates make up Earth’s Lower mantle B. Lithosphere C. Asthenosphere D. Inner core A. CRCT Question of the Day 3-11-11 A mid-ocean ridge forms when plates Move apart B. Push together C. Scrape past each other D. Subduct A. CRCT Question of the Day 3-15-11 Which of the following is evidence for sea-floor spreading? Matching patterns of magnetic stripes in the ocean floor. B. Volcanic eruptions along mid-ocean ridges C. Older rock found farther from midocean ridges D. All of the above A. CRCT Question of the Day 3-16-11 Wegener thought the continents moved because fossils of the same organisms are found on widely separated continents. Wegener’s use of fossil evidence is an example of a(n) Prediction B. Observation C. Inference D. Controlled experiment. A. CRCT Question of the Day 3-17-11 The relatively soft layer of the upper mantle is the Asthenosphere. B. Lithosphere. C. Inner core. D. Continental core. A. CRCT Question of the Day 3-21-11 The force that causes part of the crust to become shorter and thicker is Tension. B. Compression. C. Shearing. D. Normal force. A. CRCT Question of the Day 3-22-11 When the hanging wall of a fault slips down with respect to the footwall, the result is a Reverse fault. B. Syncline. C. Normal fault. D. Strike-slip fault. A. CRCT Question of the Day 3-23-11 Which of the following is a rating of earthquake damage at a particular location? Moment magnitude scale B. Focus scale C. Mercalli scale D. Richter scale A. CRCT Question of the Day 3-24-11 The largest waves on a seismogram are P waves. B. S waves. C. Surface waves. D. Tsunamis. A. CRCT Question of the Day 3-25-11 In the hours after an earthquake, people should not go inside a building, even if it appears undamaged, because of Aftershocks B. Liquefaction. C. Tsunamis. D. Deformation. A. CRCT Question of the Day 3-28-11 A composite volcano is most likely to form Above a hot spot. B. Where an oceanic plate collides with a continental plate. C. Along the mid-ocean ridge. D. Along a rift valley. A. CRCT Question of the Day 3-29-11 As silica content of magma decreases, its viscosity. May either increase or decrease B. Increases C. Stays the same D. Decreases A. CRCT Question of the Day 3-30-11 Which of the following is a type of mechanical weathering? Abrasion B. Plant growth C. Freezing and thawing D. All of the above A.