Water Distribution
67%
Approximately what percentage of Earth's surface is covered in oceans?
10 drops of water
Carly is making a model of Earth's water. She used a 1 gallon bucket to represent the total percentage of Earth's water in the oceans. Which of the following would she use to model the percentage of Earth's total water found in lakes and rivers?
Rivers bring weathered salts to the ocean, where it is not evaporated.
Clayton tasted ocean water and found it very salty. Which statement best explains the salty nature of ocean water?
oceans
Freshwater is water that contains little or no salt. Which of the following is least likely to be a source of freshwater?
25 trillion gallons
How much freshwater is used by the United States each year?
97%
How much of Earth's water is salt water?
Jorian's statement is incorrect, because most of earth is salt water and undrinkable
Jorian told Emma that humans will never run out of drinking water because 70% of Earth's surface is covered with water. Which best describes Garrett's statement?
1%
Most of Earth is covered in water. What percentage of this water can humans drink?
water
Most of Earth's surface is covered by
oceans
Most of Earth's surface is covered with water. Only 2.5% of Earth's global water is freshwater. Of all the freshwater on Earth, 78% is frozen. Where is most of Earth's water found?
Groundwater
Where does most water come from?
in ice caps and glaciers
Where is most of the Earth's freshwater located?
oceans → ice → groundwater → lakes → rivers
Which correctly orders the reservoirs of Earth's total water from the largest to the smallest portions?
aquifer
Which of the following is an underground layer of water-bearing permeable rock or gravel from which groundwater can be extracted?
hydrosphere
Which of the following terms refers to all of Earth's water?
Most of the Earth is covered in water causing it to look blue from space
Why is Earth called the "Blue Planet"?
