S6E3 Location of Earth's Water

According to the pie chart, where is MOST of the freshwater on Earth located?

• lakes

• groundwater

• river systems

• frozen as ice

Most of the Earth’s water is found in

• glaciers.

• lakes.

• oceans.

• rivers.

About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much freshwater unavailable for human use?

• It is frozen.

• It is polluted.

• It is salt water.

• It is in aquifers.

This table shows sizes of Earth's oceans. Based on this table and the makeup of Earth's total water, which reasonable conclusion can be made?

• Earth's seas contain more salt water than the oceans.

• Earth's land has more surface area than Earth's oceans.

• Earth's largest source of salt water is the Pacific Ocean.

• The Pacific Ocean is larger than all other oceans combined.

97.5% of all the water on Earth is salt water. Fresh water is distributed on Earth as seen in the bar graph above. What can we say about MOST of the freshwater on Earth?

• Most of the water is easy to find and use.

• We cannot use most of it because it is frozen.

• Most of the freshwater is home to animals and plants.

• We must drill wells to use it because it is underground.

What percentage of Earth's water is salt water?

• 91%

• 97%

• 50%

• 71%

Salt water oceans make up about ​ (a)   of the Earth's surface, while land makes up about ​ (b)   .

• 71%
• 29%
• 91%
• 9%
• 60%
• 50%
• 40%

What percentage of Earth's water is freshwater?

• 1%

• 3%

• 6%

• 10%

Most of the Earth's water is in

• salty oceans
• freshwater lakes
• freshwater ponds
• glaciers

Where is most of the freshwater found on Earth?

• lakes
• glaciers/ icecaps
• oceans
• rivers