Solar System

Front

What is an Astronomical Unit?

Back

The distance between the earth and sun.

Front

What is a Light Year?

Back

The distance it takes light to travel in one year.

Front

What is Rotation in astronomy?

Back

How long it takes a planet to spin on its axis.

Front

What is Revolution in astronomy?

Back

How long it takes a planet to orbit the sun.

Front

What is the composition of the sun?

Back

The sun is 75% hydrogen and 25% helium.

Front

What is the scientific name of the sun?

Back

Sol.

Front

What are the four inner planets known as terrestrial planets?

Back

Mercury, Venus, Earth, Mars.

Front

What are comets made of?

Back

Large objects made of dust and ice that orbit the Sun.

Front

Where are comets mostly found?

Back

In the solar system, some in the Kuiper Belt and others in the Oort Cloud.

Front

What are short-period comets?

Back

Comets that take less than 200 years to orbit the Sun, found in the Kuiper Belt.