What does the universe consist of?

• About 1 billion planets

• Air, water and ozone

• Space and all the matter and energy in it

• Stars and planets

Stars are grouped together to form .....?

• Galaxies

• The solar system

• Gas giants

• Super-clusters

The sun is a ....?

• Galaxy

• Star

• Gas giant planet

• Terrestrial planet

What is the number of planets in 'our' Solar System?

• 4

• 6

• 8

• 10

The four gas giant planets are ...?

• Jupiter, Saturn, Uranus and Neptune

• Earth, Mars, Saturn and Neptune

• Mercury, Venus, Saturn and Mars

• Mercury, Venus, Earth and Mars

the hottest planet in 'our' solar system is ...?

• Mercury

• Venus

• Mars

• Neptune

Earth can support life because it has ...?

• Air, water and an ozone layer

• Oxygen, water and carbon dioxide

• An Atmosphere containing helium and hydrogen

• An ozone layer, hydrogen and helium

A Galaxy is ......?

• Formed from a black hole

• Formed from helium and hydrogen

• A large collection of stars and dust where there is no gravity

• A large collection of stars, gas and dust, held together by gravity

Radiation from stars usually results from ....?

• Fission between hydrogen and helium atoms

• Fusion of hydrogen and helium atoms

• Energy which originated in the Big Bang

• Energy which is trapped inside the star

Pluto is ...?

• A terrestrial planet orbiting the sun

• A gas giant planet orbiting the sun

• A dwarf planet orbiting the sun

• An asteroid