Level 1: Astronomy

What causes day and night on Earth?

• The Moon shining

• The stars moving

• The Earth spinning

• The Sun turning off

Answer explanation

Earth spins like a top. When our side faces the Sun, it is day. When it turns away, it becomes night.

Why do we have different seasons?

• Because of the clouds

• Because the Earth is tilted and moves around the Sun

• Because the Sun moves closer

• Because the Moon changes

Answer explanation

Earth is tilted, so as it orbits the Sun, different parts get more or less sunlight, causing seasons.

How long does it take Earth to go all the way around the Sun?

• One week

• One month

• One day

• One year

Answer explanation

It takes Earth about 365 days — or one year — to complete one full orbit around the Sun.

Why is it colder in winter?

• Because our part of Earth is tilted away from the Sun

• Because there are more clouds

• Because Earth is not spinning

• Because the Sun turns off

Answer explanation

In winter, our part of Earth is tilted 'away' from the Sun, so we get less sunlight and warmth.

What is a protostar?

• A baby star just beginning to form

• A tiny moon

• A black hole

• A broken planet

Answer explanation

A protostar is a new star that’s just starting to grow from clouds of dust and gas in space.