Hydrosphere

How much of Earth's water is unavailable for humans to consume due to its high salinity? 

• 3%
• 23%
• 77%
• 97%

How does the amount of water circulating in the water cycle change?

• The amount of water remains constant
• The amount of water increases each time it rains
• he amount of water decreases and then increases each day
• The amount of water decreases every time evaporation occurs

Why is such a small amount of freshwater available for humans to readily use?

• Majority of freshwater is mixed in with the ocean water
• Most of fresh water is frozen in glaciers and polar ice caps
  
• Most of freshwater found in the gas form in the atmosphere
• Most of freshwater is liquid in lakes, rivers , & aquifers

Certain stages of the water cycle are most likely occurring under certain weather conditions.  Which stage is most likely going to occur on a warm, sunny day?

• precipitation
• condensation
• evaporation

Water on Earth is either freshwater or saltwater. What is the percent ratio of freshwater to percent saltwater on Earth?

• 1% freshwater : 99% saltwater

• 3% freshwater : 97% saltwater

• 30% freshwater : 70% saltwater

• 50% freshwater : 50% saltwater

When water goes from being a gas (water vapor) to a liquid, that process is called 

• Condensation
• Evaporation
• Transpiration
• Precipitation

Water that seeps into soil and enters through aquifers is called _____?

• Reservoir

• Standing Water

• Running Water

• Groundwater

Where does most fresh water exist?

• ice caps, lakes, and streams
• glaciers, rivers, and oceans
• aquifers, ice caps, and glaciers

What follows evaporation during the water cycle? 

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

When plants release excess water it is called

• evaporation
• transpiration
• condensation
• water cycle