Earth's Water Study Guide

Front

What is an aquifer?

Back

An aquifer is a layer of rock or sediment that holds water and allows it to flow. It is an important source of freshwater.

Front

What role do oceans play in the water cycle?

Back

Oceans are crucial in the water cycle as they hold about 97% of Earth's water and are a primary source of evaporation.

Front

What is condensation?

Back

Condensation is the process where water vapor cools and changes back into liquid water, forming droplets.

Front

What is evaporation?

Back

Evaporation is the process where liquid water turns into vapor due to heat.

Front

What is precipitation?

Back

Precipitation is any form of water, such as rain or snow, that falls from the atmosphere to the Earth's surface.

Front

What percentage of Earth's water is found in the oceans?

Back

About 97% of Earth's water is found in the oceans.

Front

What is the difference between saltwater and freshwater?

Back

Saltwater contains a high concentration of salts, while freshwater has low salt content and is found in rivers, lakes, and aquifers.

Front

What is permafrost?

Back

Permafrost is permanently frozen ground that can be found in polar regions.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

Why is boiling water used in investigations of the water cycle?

Back

Boiling water is used because the heat causes the water to turn into vapor, demonstrating evaporation.