Earth's Water System Lesson 1 Water Distribution on Earth

What can you conclude about the amount of salt water on Earth?

97.4 percent of the water on Earth is saltwater

Identify the statement that best describes where Earth's freshwater can be found. A. Most of the freshwater is trapped in glaciers and ice caps. B. Earth's freshwater is spread out equally over ice, groundwater, and surface water. C. Most of the freshwater on Earth is found underground. The rest is stored as surface water. D. Earth's freshwater is found mostly in rivers and streams. Very little is found in glaciers or ice caps.

A. Most of the freshwater is trapped in glaciers and ice caps.

Choose the answer that best explains one reason why conservation of freshwater is important

Freshwater should be conserved because it is the only water that can be consumed by humans.

How are glaciers and oceans similar?

Oceans contain salt water and glaciers contain fresh water, but both both are difficult for humans to use.

Around 97 percent of the water on Earth's surface is ________water.

Salt Water

What can you infer about salt and fresh water on Earth.

Saltwater is abundant on Earth, while freshwater is limited.

Freshwater Source Percentages Source Percentage (%): Ground Ice and Permafrost ? Lakes and Rivers 21.4 Groundwater 3.8 Other 5.8 Based on the table, what can you conclude about the percentage of ground ice and permafrost?

The percentage of ground ice and permafrost is greater than any other source.

Lakes and rivers are part of the ____________

hydrosphere

Less than 1 percent of Earth's freshwater is readily available for human and animal use. Where is the majority of the remaining freshwater located?

in ice caps and glaciers

A reservoir is an artificial lake that is built to ______________ water for a later time.

store