JMS Hydrology & Oceanography Review

About what percent of Earth's surface is covered in water?

• 25%
• 3%
• 75%
• 97%

Where is most of Earth's FRESH water found?

• in rivers and lakes
• high in the atmosphere as water vapor
• deep underground as groundwater
• trapped in icecaps & glaciers

The sun provides the energy to "drive" the water cycle. What does this mean?

• Light from the sun helps condensation occur.
• Heat from the sun helps evaporation occur.
• The sun's solar wind helps transpiration to take place.
• Charged particles give energy to clouds for precipitation to occur.

Why does the amount of water on Earth remain fairly constant?

• The amount of precipitation equals the amount of transpiration.
• The amount of evaporation equals the amount of precipitation.
• The amount of desalination equals the amount of refrigeration.
• The amount of subduction equals the amount of sea-floor spreading.

Where does most of Earth's evaporation take place?

• over the ocean
• below Earth's surface
• inside of clouds
• on the surface of ponds

Water vapor that evaporated from the ocean and is now in the atmosphere is _____ water.

• fresh
• salt

What process MOST LIKELY formed the water droplets on this can of soda?

• precipitation
• transpiration
• evaporation
• condensation

Which choices shows the correct amounts of fresh water, from LARGEST to smallest?

• water vapor, surface water, groundwater, ice
• ice, oceans, surface water, salt water lakes
• ice, groundwater, surface water, water vapor
• groundwater, ice, surface water, water vapor

What is the process in which a liquid gains energy and becomes a gas?

• evaporation
• condensation
• precipitation
• transpiration

How much of Earth's total water supply is readily available for human use?

• 22%
• 3%
• less than 1%
• 75%