Solar System Vocabulary

Front

What is the Nebular Theory?

Back

A theory on how the solar system was formed.

Front

Which planets do not have solid surfaces?

Back

Gas giants.

Front

What are the inner planets known as?

Back

The Terrestrial Planets.

Front

What is a natural satellite that orbits an object other than a star?

Back

Moon.

Front

What is the age of the Sun?

Back

Nearly 5 billion years old.

Front

What are the four terrestrial planets in our solar system?

Back

Mercury, Venus, Earth, Mars.

Front

What is the largest planet in our solar system?

Back

Jupiter.

Front

What is the main component of the Sun?

Back

Hydrogen.

Front

What is the asteroid belt?

Back

A region of space between Mars and Jupiter where most asteroids are found.

Front

What is a comet?

Back

A small celestial body made of ice and dust that, when close to the Sun, displays a visible atmosphere and sometimes a tail.