Hydrosphere and Ecosystems

An example of something dissolving would be:

• butter being heated
• sugar in tea
• ice in water
• crayons in a box

The process when liquid water from earth's surface changes to water vapor:

• condensation
• evaporation
• precipitation
• runoff

How much of the earth's water is freshwater?

• 50 %
• 3 %
• 97 %
• 93 %

Which best describes most of Earth's water?

• Freshwater
• Saltwater 
• Drinking Water 

Which of these contain most of Earth’s water?

• Ocean
• Rivers
• Lakes
• Glaciers 

Where is most of Earth's freshwater located? 

• Oceans 
• Rivers 
• Lakes 
• Frozen in Glaciers 

_______ is the universal solvent because it dissolves most substances. 

• Oxygen 
• Water
• Salt
• Gatorade 

Which is a measure of the dissolved salt in saltwater? 

• density
• salinity
• thermocline 
• temperature 

____________ means slightly salty, like the mixture of river water and seawater in estuaries.

• Food Web 
• Plankton 
• Benthos
• Brackish 

What follows evaporation during the water cycle? How does this occur?

• Water evaporates into water vapor
• Water vapor condenses and forms a  cloud
• Water precipitates to the ground
• Water runs down into the hydrosphere