The Sun is a:

• star

• satellite

• planet

• asteroid

Which of the following are gas planets?

• Mars

• Mercury

• Jupiter

• Neptune

Label the planets in the order from the Sun.

a

b

c

d

e

f

g

h

Mars

Saturn

Uranus

Venus

Earth

Mercury

Jupiter

Neptune

The large group of rocks travelling around the Sun between Mars and Jupiter are known as:

• meteorites

• the Milky Way

• a meteor shower

• the Asteroid Belt

What are two differences between the Solar System and the Milky Way?

• The Milky Way has over 100 billion stars, the Solar System has only one star

• Earth is in the Solar System but not in the Milky Way

• The Solar System has no stars in it

• The Milky Way is much bigger than the Solar System

What is the difference between a planet and a moon?

A year on Earth is 365.25 days. This is the time it takes:

• all planets to orbit the Sun

• the Earth to orbit the Sun

• the Earth to spin on its axis

• the Moon to orbit the Earth

What keeps the planets in their orbits around the Sun?

• Gravity

• Sunlight

• Magnetism

• Friction

What is a satellite?

• A piece of rock or ice moving through space in a straight line

• A star

• An object that orbits around another object

• A spacecraft sent to land on a planet or moon

Mars takes 687 days to orbit the Sun. This means that its years are __________ long.

• 687 days

• 365 days

• 500 days

• 730 days