Earth's 4 Spheres

When a wildfire occurs, what spheres are interacting?

• biosphere only

• atmosphere and biosphere

• biosphere and hydrosphere

Identify the PERCENTAGE OF FRESH water that is frozen in icecaps and glaciers.

• 69%

• 0%

• 100%

Identify the percent of Earth's surface that is covered in water.

• 1%

• 100%

• 50%

• 75%

Identify the PERCENT OF FRESH WATER that is underground.

• 1%

• 50%

• 30%

Name the sphere that includes all solid, liquid, and gaseous water on Earth.

• geosphere

• hydropshere

• atmosphere

• biosphere

True or False?

The four spheres of Earth work independently of one another.

• True

• False

How much of Earth's fresh water is found on the surface (such as lakes, rivers, streams, swamps, etc.)?

• Less than 1%

• 30%

• 69%

Which sphere is made up of all the physical elements of Earth's surface, crust, and interior?

• biosphere

• geosphere

• hydrosphere

• atmosphere

How much of Earth's water is fresh (including frozen and liquid)?

• 3%

• 75%

• 97%

Name the thin layer of gas and dust that surrounds the Earth.

• hydrosphere

• geosphere

• biosphere

• atmosphere