Science Studies Weekly - Earth Space Science - Week 6

Which of these choices supplies the energy that drives the water cycle?

• the clouds

• the sun

• the groundwater

• the oceans

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In a science experiment, 50 grams of salt are placed in a metal pan and dissolved in100 mL of water. The water is heated for 3 minutes. What is most likely happening in

the pan when the water first reaches 100 degrees Celsius?

• The water will have all evaporated.

• The water will no longer contain salt.

• The water will be boiling.

• The water will be cool enough to pour into a beaker.

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Continued from #2 - In that same experiment (salt dissolved in water, then heated to 100 degrees Celsius), what would be happening after the solution was kept at 100 degrees Celsius for 20 minutes or longer?

• The water will have all evaporated.

• The water will no longer contain salt.

• The water will be boiling.

• The water will be cool enough to pour into a beaker.

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Where would be the best place for scientists to conduct experiments to search for fresh drinking water?

• the South Pole

• the moon

• the Pacific Ocean

• the Mediterranean Sea

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Precipitation that falls to Earth sometimes soaks into the soil and becomes ______.

• groundwater

• polluted water

• fresh water

• salt water

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During which process is liquid water changed to a gas within the water cycle?

• condensation

• precipitation

• evaporation

• runoff

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Use this chart to answer the question: Skipping which activity from the chart would conserve the most water?

• A taking a bath

• washing the car

• brushing teeth

• taking a shower

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Use this chart to answer the question: How much water could be saved in one week, if a person who usually takes a bath switched instead to taking a five-minute shower?

• 10 gallons

• 65 gallons

• 70 gallons

• The amount of water used would be equal.

What does a botanist study?

• Animals

• Human medicine

• Plants

• The Earth's surfaces

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What does a physician study?

• Climate patterns and weather

• Human medicine

• Plants

• The environment around us

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