Sun, Earth, Moon

Front

What is the Sun?

Back

A star at the center of the Solar System that supplies heat and light to Earth.

Front

What does the Sun do for Earth?

Back

It provides heat and light.

Front

What keeps the Solar System in orbit?

Back

The enormous gravity of the Sun.

Front

What is a revolution?

Back

When one object orbits around another object.

Front

How long does it take Earth to make one revolution around the Sun?

Back

365 days (one year).

Front

What is a rotation?

Back

When one object spins around on its axis.

Front

How long does it take for the Earth to make one rotation?

Back

24 hours (one day).

Front

What is the Moon?

Back

A natural satellite that orbits around the Earth.

Front

Why do we only see one side of the Moon?

Back

Because the time it takes the Moon to rotate and revolve is the same.

Front

What is a satellite?

Back

An object that orbits around a planet.