Hydrosphere: water cycle; types of water; forms of water

What describes all water on Earth?

• geosphere

• atmosphere

• hydrosphere

• paleobiosphere

How much of our Earth is covered in water?

• 25%

• 50%

• 70%

• 90%

How much of Earth's water is found in ocean?

• 3%

• 15%

• 86%

• 97%

How much of Earth's water is freshwater?

• 70%

• 97%

• 3%

• 16%

What is the continuous cycling of water across Earth's surface that occurs on, above, and below Earth's surface?

• rock cycle

• hydrologic cycle

• infiltration

• hydrosphere

What is the driving force of the water, or hydrologic, cycle?

• moon

• sun

• rain

• ocean

Which type of water is mixed with minerals and gases, is found in all 3 phases, and is found in things like rivers, lakes, and ponds?

• freshwater

• saltwater

Which type of water is a mixture of nutrients, gases, and salt and is found in places like bays and oceans?

• freshwater

• seawater

Salinity refers to the measure of ______ in seawater.

• salts

• nutrients

• acid

• dissolved gases

Which is more dense: saltwater or freshwater?

• saltwater

• freshwater