EARTH'S WATER 2018-2019

As water changes state, the water either absorbs or releases energy. Which of these changes of state would involve water absorbing energy?

• condensation

• deposition

• evaporation

• freezing

Bryan is doing a science experiment on the stomata of plants. He wants to study how tomato plants are involved in the water cycle. What is the main role of plants in the water cycle?

• They take in water from the air.

• They release water vapor into the air.

• They provide a surface for condensation.

• They store water in their stems and leaves.

What is the process called when water from ice or snow turns directly into vapor without melting

• Evaporation

• Precipitation

• Sublimation

• Transpiration

Where is most of the water on Earth stored?

• Lakes

• Rivers

• Oceans

• Ice Caps

Which of the following is the best example of how the water cycle carries on energy transfer?

• a flooding river depositing silt on a floodplain

• a warm ocean current warming the air above it

• ocean water depositing sand particles on a shore

• water seeping through the soil and dissolving salts

Which example of water’s importance on Earth most directly relates to the economic health of developing countries?

• Most of Earth’s water is in the form of salt water.

• Adequate water supplies are needed to grow food crops.

• Every living organism on Earth is made up partly of water.

• Water has a much higher heat capacity than other substances have.

Water moves under Earth’s surface to fill in open spaces in rocks or soil. What is this type of water called?

• watershed

• water table

• groundwater

• surface water

How does the property of cohesion affect the way liquid water behaves?

• Water forms droplets whenever possible.

• When water freezes, it becomes less dense.

• Water retains heat longer than other substances do.

• When water vaporizes, it stores more energy than liquid water stores.

What percentage of water on Earth is fresh water?

• 0.5

• 3

• 7

• 18

Which of the following most directly prevents erosion in a watershed?

• soil type

• plant life

• sediment transport

• agricultural irrigation