Space Unit TEST REVIEW

Front

What are the inner planets?

Back

The inner planets are also known as terrestrial planets. They include Mercury, Venus, Earth, and Mars.

Front

What is a planet?

Back

A planet is a large, round body that revolves around a star.

Front

What is a solar system?

Back

A solar system is a star and all the planets and other bodies that revolve (orbit) around it.

Front

What does it mean to orbit?

Back

To orbit means to follow a path around another space object.

Front

What are gas giants?

Back

Gas giants are large planets that are mostly made of gases. The gas giants in our solar system are Jupiter, Saturn, Uranus, and Neptune.

Front

Name the four terrestrial planets.

Back

The four terrestrial planets are Mercury, Venus, Earth, and Mars.

Front

What is the difference between rotation and revolution?

Back

Rotation is when an object spins on its own axis, while revolution is when an object moves around another object.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward each other, like how the Earth pulls us down.

Front

What is the path of a planet around a star called?

Back

The path of a planet around a star is called an orbit.

Front

Which planet is known as the Red Planet?

Back

Mars is known as the Red Planet.