Space Review

Front

What causes the sun's rays to hit the Earth's surface at different angles?

Back

The axial tilt of the Earth.

Front

What heavenly body did the earlier astronomers believe was the center of the universe?

Back

The Earth.

Front

Which planet has a permanent blanket of clouds that traps thermal energy causing high surface temperatures?

Back

Venus (Planet 2).

Front

What phenomenon is represented by the rotation of the Earth?

Back

Day and night.

Front

What causes the moon phases?

Back

The reflection of sunlight off the moon's surface.

Front

What is the term for the path that the Earth takes around the sun?

Back

Revolution.

Front

What is the name of the force that keeps planets in orbit around the sun?

Back

Gravity.

Front

What are the four seasons experienced on Earth?

Back

Spring, Summer, Autumn (Fall), Winter.

Front

What is the term for the tilt of the Earth's axis?

Back

Axial tilt.

Front

What is the main reason for the changing seasons on Earth?

Back

The axial tilt of the Earth as it revolves around the sun.