All living things on Earth

The thin layer of gases that form Earth's outermost layer

The solid rock & metal of the Earth

Earth's atmosphere is mostly or 78%, which gas?

Most of the energy for the water cycle comes from where?

Most of the energy for the rock cycle comes from where?

When a human drinks water, which two spheres interact?

When a river washes away sediment, which two spheres interact?

This term means "the shape of the land."

This is the height of a point above sea level.

This is the difference in elevation between the highest and lowest points in an area.

These forces build up landforms.

These forces destroy and wear away landforms.

This landform has high elevation and high relief.

This landform has high elevation and low relief.

This landform has low elevation and low relief.

This is a triangle shaped area of sediment that has been deposited at the mouth of a river.

This map has curvy lines that show how steep or gradual a slope is.

This navigational system uses 3 satellites to locate a position.

The process of water molecules on the surface of a liquid absorbing energy and changing to a gas.

The process of water vapor losing energy and changing to a liquid.

The process of plants releasing water vapor through their leaves.

The name for any freshwater that falls from clouds to the surface of Earth.

Step #1: Energy from the Sun causes liquid water to change to water vapor.

Step #2: Water vapor loses energy, and forms clouds.

Step #3: Water falls from clouds to Earth.

Step #4: Freshwater flows over Earth's surface.

Where is most of Earth's saltwater?

What percent of Earth's total water is freshwater?

What percent of Earth's total water is saltwater?

What is the name for freshwater that fills cracks in rocks underground?

What is the name for the land that supplies water to a river system?

What is the name for the area underground that is not filled with water?

What is the name for the area underground that is filled with water?

This is the measure of the amount of salt in water.