CRCT Question of the Day 1-5-11 Why don’t plants normally grow on the bottoms of deep lakes? A....

CRCT Question of the Day CRCT Question of the Day 1-5-111-5-11

Why don’t plants normally grow on Why don’t plants normally grow on the bottoms of deep lakes?the bottoms of deep lakes?

A.A. The water is too salty.The water is too salty.B.B. The water is too cold.The water is too cold.C.C. Photosynthesis does not occur in Photosynthesis does not occur in

water.water.D.D. There is not enough sunlight for There is not enough sunlight for

photosynthesis to occur.photosynthesis to occur.Standard & Element – S6E3.aStandard & Element – S6E3.a


Which of the following is an example of a Which of the following is an example of a point source of water pollution?point source of water pollution?

A.A. Runoff of pesticides from wheat fieldsRunoff of pesticides from wheat fieldsB.B. Salt spread on parking lots to melt iceSalt spread on parking lots to melt iceC.C. Chemical flowing from a factory into a Chemical flowing from a factory into a

streamstreamD.D. Fertilizer from corn fields that runs off Fertilizer from corn fields that runs off

into streamsinto streamsStandard & Element – S6E5.jStandard & Element – S6E5.j


For a science project you must build a model For a science project you must build a model of an aquifer. What material would be the of an aquifer. What material would be the best to use for the layer that will hold water?best to use for the layer that will hold water?

A.A. An impermeable material, such as clayAn impermeable material, such as clay

B.B. An impermeable material, such as graniteAn impermeable material, such as granite

C.C. A permeable material, such as gravelA permeable material, such as gravel

D.D. A material that does not have poresA material that does not have pores

Standard & Element – S6E3.aStandard & Element – S6E3.a


A scientist plans to test the effect A scientist plans to test the effect temperature has on the density of ocean temperature has on the density of ocean water. What will the manipulated water. What will the manipulated variable be in her experiment?variable be in her experiment?

A.A. DensityDensity

B.B. SalinitySalinity

C.C. TemperatureTemperature

D.D. Water depthWater depth

Standard & Element – S6E3.cStandard & Element – S6E3.c


In which of the following areas would the In which of the following areas would the salinity of the ocean water be the highest?salinity of the ocean water be the highest?

A.A. In a hot, dry areaIn a hot, dry area

B.B. Near a rainy coastal area close to the Near a rainy coastal area close to the equatorequator

C.C. At the mouth of a large river.At the mouth of a large river.

D.D. In cold, deep water, near the ocean In cold, deep water, near the ocean bottombottom

Standard & Element – S6E3.cStandard & Element – S6E3.c


A major warm ocean current flows along A major warm ocean current flows along a coastal area. What type of climate a coastal area. What type of climate would you most likely find in the area would you most likely find in the area influenced by the current?influenced by the current?

A.A. Extremely hot and dryExtremely hot and dryB.B. Cool and dryCool and dryC.C. Extremely cool and wetExtremely cool and wetD.D. Mild and wetMild and wet

Standard & Element – S6E3.dStandard & Element – S6E3.d


What two gases make up What two gases make up approximately 99% of Earth’s approximately 99% of Earth’s atmosphere?atmosphere?

A.A. Nitrogen and carbon dioxideNitrogen and carbon dioxideB.B. Oxygen and carbon dioxideOxygen and carbon dioxideC.C. Nitrogen and hydrogenNitrogen and hydrogenD.D. Nitrogen and oxygenNitrogen and oxygen

Standard & Element – S6E4Standard & Element – S6E4


In the troposphere, as altitude In the troposphere, as altitude increasesincreases

A.A. Air pressure decreases.Air pressure decreases.

B.B. Temperature decreases.Temperature decreases.

C.C. Air density decreases.Air density decreases.

D.D. All of the aboveAll of the above



What is the main method by which What is the main method by which heat is transferred within the heat is transferred within the troposphere?troposphere?

A.A. RadiationRadiationB.B. ConductionConductionC.C. ConvectionConvectionD.D. The Greenhouse effectThe Greenhouse effect



The ozone layer is found in theThe ozone layer is found in the

A.A. Troposphere.Troposphere.

B.B. Stratosphere.Stratosphere.

C.C. Mesosphere.Mesosphere.

D.D. Thermosphere.Thermosphere.

Standard & Element – S6E4Standard & Element – S6E4


How are air masses classified?How are air masses classified?

A.A. By temperature and pressureBy temperature and pressure

B.B. By pressure and humidityBy pressure and humidity

C.C. By temperature and densityBy temperature and density

D.D. By temperature and humidityBy temperature and humidity



A rapidly moving cold air mass meets a A rapidly moving cold air mass meets a slowly moving warm air mass and forms a slowly moving warm air mass and forms a front. What will most likely occur at this front. What will most likely occur at this front?front?

A.A. The two air masses will mix together.The two air masses will mix together.B.B. The warm air will slide under the cold air. The warm air will slide under the cold air.

The cold air will rise and get warmer.The cold air will rise and get warmer.C.C. Cold air will slide under the warm air. Cold air will slide under the warm air.

Warm air will rise and cool. Clouds will Warm air will rise and cool. Clouds will form.form.

D.D. The less dense warm air will sink and cool. The less dense warm air will sink and cool. Clouds will form. Clouds will form.



Which of the following represents a Which of the following represents a sudden change in Earth’s atmosphere?sudden change in Earth’s atmosphere?

A.A. The carbon cycleThe carbon cycle

B.B. The nitrogen cycleThe nitrogen cycle

C.C. A rain showerA rain shower

D.D. A dust stormA dust storm



The gas that makes up the largest The gas that makes up the largest percentage of the atmosphere’s percentage of the atmosphere’s substance issubstance is

A.A. NitrogenNitrogen

B.B. OxygenOxygen

C.C. Water vaporWater vapor

D.D. Carbon dioxideCarbon dioxide


In which of the atmosphere’s layers does In which of the atmosphere’s layers does temperature decrease as the altitude temperature decrease as the altitude increases?increases?

A.A. The troposphere and the stratosphereThe troposphere and the stratosphere

B.B. The troposphere and the mesosphereThe troposphere and the mesosphere

C.C. The stratosphere and the mesosphereThe stratosphere and the mesosphere

D.D. The stratosphere and the The stratosphere and the thermospherethermosphere


What are the three forms of water on What are the three forms of water on Earth?Earth?

A.A. Groundwater, lakes, and cloudsGroundwater, lakes, and clouds

B.B. Liquid water, frozen water, and water Liquid water, frozen water, and water vaporvapor

C.C. Gas, steam, and vaporGas, steam, and vapor

D.D. Groundwater, oceans, and iceGroundwater, oceans, and ice


Which is a characteristic of a Which is a characteristic of a pond?pond?

A.A. Rooted plants covering the Rooted plants covering the entire bottomentire bottom

B.B. Plants only near shorePlants only near shore

C.C. A layer of impermeable rockA layer of impermeable rock

D.D. Water heated by underground Water heated by underground rockrock


The term for pollution that can The term for pollution that can traced to a specific location istraced to a specific location is

A.A. Water pollutionWater pollution

B.B. Point-source pollutionPoint-source pollution

C.C. Nonpoint-source pollutionNonpoint-source pollution

D.D. Runoff pollutionRunoff pollution


How is water stored in an How is water stored in an aquifer?aquifer?

A.A. In an open underground lakeIn an open underground lake

B.B. In cracks and spaces in rocksIn cracks and spaces in rocks

C.C. In impermeable rockIn impermeable rock

D.D. In wells and springsIn wells and springs


How are glaciers like rivers?How are glaciers like rivers?

A.A. They are made of liquid water.They are made of liquid water.

B.B. Their water sinks into the Their water sinks into the ground.ground.

C.C. They flow downhill.They flow downhill.

D.D. They are a mile thick.They are a mile thick.


How much of Earth’s water is How much of Earth’s water is fresh water?fresh water?

A.A. Almost allAlmost all

B.B. About halfAbout half

C.C. Very littleVery little

D.D. nonenone


What process forms clouds?What process forms clouds?

A.A. EvaporationEvaporation

B.B. PrecipitationPrecipitation

C.C. CondensationCondensation

D.D. dehydrationdehydration


What two major factors are What two major factors are usually used to classify usually used to classify climates?climates?

A.A. Precipitation and altitudePrecipitation and altitude

B.B. Temperature and air pressureTemperature and air pressure

C.C. Temperature and precipitationTemperature and precipitation

D.D. Air pressure and humidityAir pressure and humidity


A rapidly moving cold air mass meets a A rapidly moving cold air mass meets a slowly moving warm air mass and forms a slowly moving warm air mass and forms a front. What will most likely occur a this front. What will most likely occur a this front?front?

A.A. The two air masses will mix together.The two air masses will mix together.B.B. The warm air will slide under the cold air. The warm air will slide under the cold air.

The cold air will rise and get warmer. The cold air will rise and get warmer.C.C. Cold air will slide under the warm air. Cold air will slide under the warm air.

Warm air will rise and cool. Clouds will Warm air will rise and cool. Clouds will form.form.

D.D. The less dense warm air will sink and The less dense warm air will sink and cool. Clouds will form.cool. Clouds will form.


Predict what type of climate would be the Predict what type of climate would be the most likely in an area located in the most likely in an area located in the interior of a large continent, on the east interior of a large continent, on the east side of a major mountain range. Winds side of a major mountain range. Winds in the area commonly blow from west to in the area commonly blow from west to east.east.

A.A. DryDryB.B. PolarPolarC.C. Temperate marineTemperate marineD.D. Tropical rainyTropical rainy


What would a scientist usually do after What would a scientist usually do after conducting a controlled experiment?conducting a controlled experiment?

A.A. Interpret the data from the experimentInterpret the data from the experimentB.B. Communicate the results of the Communicate the results of the

experimentexperimentC.C. Draw a conclusion, and if needed, Draw a conclusion, and if needed,

revise the hypothesis.revise the hypothesis.D.D. All of the aboveAll of the above


Scientific inquiry often begins with Scientific inquiry often begins with A.A. Drawing conclusions.Drawing conclusions.B.B. Posing questions.Posing questions.C.C. Making models. Making models. D.D. Communicating results.Communicating results.


Which characteristic is used to Which characteristic is used to determine the color of a determine the color of a mineral’s powder?mineral’s powder?

A.A. LusterLusterB.B. FractureFractureC.C. CleavageCleavageD.D. StreakStreak


A metamorphic rock in which A metamorphic rock in which the grains line up in parallel the grains line up in parallel bands is abands is a

A.A. Clastic rockClastic rockB.B. Nonclastic rockNonclastic rockC.C. Nonfoliated rockNonfoliated rockD.D. Foliated rockFoliated rock


An igneous rock containing An igneous rock containing large crystals is most likely a(n)large crystals is most likely a(n)

A.A. Chemical rockChemical rockB.B. Extrusive rockExtrusive rockC.C. Foliated rockFoliated rockD.D. Intrustive rockIntrustive rock


Lines joining places that have Lines joining places that have the same temperature arethe same temperature are

A.A. IsobarsIsobarsB.B. IsothermsIsothermsC.C. FrontsFrontsD.D. OccludedOccluded


Rolling waves with a large Rolling waves with a large horizontal distance between horizontal distance between crests have a long crests have a long

A.A. Wave heightWave heightB.B. WavelengthWavelengthC.C. FrequencyFrequencyD.D. TroughTrough


The most abundant gas in the The most abundant gas in the atmosphere is atmosphere is

A.A. Ozone.Ozone.B.B. Water vapor.Water vapor.C.C. Oxygen.Oxygen.D.D. Nitrogen.Nitrogen.


What is the major result at Earth’s What is the major result at Earth’s surface of ozone depletion in the surface of ozone depletion in the stratosphere?stratosphere?

A.A. An increase in the amount of An increase in the amount of ultraviolent radiation reaching the ultraviolent radiation reaching the surface.surface.

B.B. A decrease in the amount of A decrease in the amount of ultraviolent radiation reaching the ultraviolent radiation reaching the surfacesurface

C.C. An increase in global temperaturesAn increase in global temperaturesD.D. A decrease in global temperaturesA decrease in global temperatures


Information about scientific theory Information about scientific theory would most likely be found under would most likely be found under which heading in a table of which heading in a table of contents?contents?

A.A. Laws of MotionLaws of MotionB.B. Doctor’s Code of EthicsDoctor’s Code of EthicsC.C. Repeated Tests Have ShownRepeated Tests Have ShownD.D. Mythology of VolcanoesMythology of Volcanoes


The continents and ocean basins are The continents and ocean basins are part of Earth’spart of Earth’s

A.A. CrustCrustB.B. MantleMantleC.C. Outer coreOuter coreD.D. Inner coreInner core


How is it possible for two different How is it possible for two different minerals to have the same chemical minerals to have the same chemical composition?composition?

A.A. They have different crystal They have different crystal structures.structures.

B.B. One is formed only by organism.One is formed only by organism.C.C. Only one is a rock-forming mineral.Only one is a rock-forming mineral.D.D. They have different appearances.They have different appearances.


The movement of air molecules The movement of air molecules causescauses

A.A. Air densityAir densityB.B. Air pressureAir pressureC.C. HumidityHumidityD.D. Relative humidityRelative humidity


What ice formation covers What ice formation covers Greenland and Antarctica?Greenland and Antarctica?

A.A. IcebergIcebergB.B. LandmassLandmassC.C. Valley glacierValley glacierD.D. Continental glacierContinental glacier


Two kinds of wetlands that border Two kinds of wetlands that border estuaries areestuaries are

A.A. Coral reefs and mangrove forestsCoral reefs and mangrove forestsB.B. Salt marshes and mangrove Salt marshes and mangrove

forestsforestsC.C. Tidal pools and salt marshesTidal pools and salt marshesD.D. Mangrove forests and tidal poolsMangrove forests and tidal pools


Which of the following best Which of the following best describes Earth’s mantledescribes Earth’s mantle

A.A. The denest of Earth’s layersThe denest of Earth’s layersB.B. The home of all life on EarthThe home of all life on EarthC.C. The thickest layer of hot rockThe thickest layer of hot rockD.D. The thinnest and hottest layerThe thinnest and hottest layer


Tectonics plates make up Earth’sTectonics plates make up Earth’sA.A. Lower mantleLower mantleB.B. LithosphereLithosphereC.C. AsthenosphereAsthenosphereD.D. Inner coreInner core


A mid-ocean ridge forms when A mid-ocean ridge forms when platesplates

A.A. Move apartMove apartB.B. Push togetherPush togetherC.C. Scrape past each otherScrape past each otherD.D. SubductSubduct


Which of the following is evidence Which of the following is evidence for sea-floor spreading?for sea-floor spreading?

A.A. Matching patterns of magnetic Matching patterns of magnetic stripes in the ocean floor.stripes in the ocean floor.

B.B. Volcanic eruptions along mid-Volcanic eruptions along mid-ocean ridgesocean ridges

C.C. Older rock found farther from mid-Older rock found farther from mid-ocean ridgesocean ridges

D.D. All of the aboveAll of the above


Wegener thought the continents Wegener thought the continents moved because fossils of the same moved because fossils of the same organisms are found on widely organisms are found on widely separated continents. Wegener’s separated continents. Wegener’s use of fossil evidence is an example use of fossil evidence is an example of a(n)of a(n)

A.A. PredictionPredictionB.B. ObservationObservationC.C. InferenceInferenceD.D. Controlled experiment.Controlled experiment.


The relatively soft layer of the The relatively soft layer of the upper mantle is the upper mantle is the

A.A. Asthenosphere.Asthenosphere.

B.B. Lithosphere.Lithosphere.

C.C. Inner core.Inner core.

D.D. Continental core.Continental core.


The force that causes part of the The force that causes part of the crust to become shorter and crust to become shorter and thicker is thicker is

A.A. Tension.Tension.B.B. Compression.Compression.C.C. Shearing.Shearing.D.D. Normal force.Normal force.


When the hanging wall of a fault When the hanging wall of a fault slips down with respect to the slips down with respect to the footwall, the result is a footwall, the result is a

A.A. Reverse fault.Reverse fault.B.B. Syncline.Syncline.C.C. Normal fault.Normal fault.D.D. Strike-slip fault.Strike-slip fault.


Which of the following is a rating Which of the following is a rating of earthquake damage at a of earthquake damage at a particular location?particular location?

A.A. Moment magnitude scaleMoment magnitude scaleB.B. Focus scaleFocus scaleC.C. Mercalli scaleMercalli scaleD.D. Richter scaleRichter scale


The largest waves on a The largest waves on a seismogram are seismogram are

A.A. P waves.P waves.B.B. S waves.S waves.C.C. Surface waves.Surface waves.D.D. Tsunamis.Tsunamis.


In the hours after an earthquake, In the hours after an earthquake, people should not go inside a people should not go inside a building, even if it appears building, even if it appears undamaged, because ofundamaged, because of

A.A. AftershocksAftershocksB.B. Liquefaction.Liquefaction.C.C. Tsunamis.Tsunamis.D.D. Deformation.Deformation.


A composite volcano is most likely to form A composite volcano is most likely to form A.A. Above a hot spot.Above a hot spot.B.B. Where an oceanic plate collides with a Where an oceanic plate collides with a

continental plate.continental plate.C.C. Along the mid-ocean ridge.Along the mid-ocean ridge.D.D. Along a rift valley.Along a rift valley.


As silica content of magma decreases, its As silica content of magma decreases, its viscosity.viscosity.

A.A. May either increase or decreaseMay either increase or decreaseB.B. IncreasesIncreasesC.C. Stays the sameStays the sameD.D. DecreasesDecreases


Which of the following is a type of mechanical Which of the following is a type of mechanical weathering?weathering?

A.A. AbrasionAbrasionB.B. Plant growthPlant growthC.C. Freezing and thawingFreezing and thawingD.D. All of the aboveAll of the above

CRCT Question of the Day 1-5-11 Why don’t plants normally grow on the bottoms of deep lakes? A....

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