Unit 4. Our planets

The Earth is one of the _______ planets in the Solar System.

• 6

• 7

• 8

• 9

Our Solar System is in a galaxy called...

• the Milky Way

• the Big Solar System

• the Moon

• the Earth

the Sun is a ...

• star

• planet

• satellite

the Moon is a...

• star

• planet

• satellite

I have rings. I'm between Jupiter and Uranus.

• Earth

• Mars

• Venus

• Saturn

Copernicus discovered that...

• the Sun is the Centre of the Solar System

• we can observe the planets using a telescope

• the Moon orbits the Earth

• there are 5 planets

Astronauts wear special clothes called...

• swimsuits

• space stations

• spacecraft

• spacesuit

Astronauts live in space stations and they travel in ...

• plane

• spacecraft

• helicopter

• hot air balloon

The _______ surrounds the Earth. It's a mixture of gases.

• mantle

• atmosphere

• core

• crust

It's the outer layer of the Earth

• atmosphere

• core

• crust

• mantle