Earth Review Part 1

Front

What is the greenhouse effect?

Back

The greenhouse effect keeps Earth’s atmosphere at a temperature that is comfortable for most living things.

Front

What causes day and night?

Back

The rotation of Earth causes day and night.

Front

What is the hydrosphere?

Back

The hydrosphere is composed of all the water on or near the Earth.

Front

What determines a year on Earth?

Back

A year on Earth is determined by the revolution of Earth around the Sun.

Front

What are greenhouse gases?

Back

Greenhouse gases include water vapor, carbon dioxide, methane, and other gases in the air.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding Earth, essential for life.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists on Earth.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of Earth, consisting of the crust and upper mantle.

Front

How does the Sun affect Earth’s climate?

Back

The Sun provides energy that drives weather patterns and climate on Earth.

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.