Yr7 P4.2 The Solar System

How many planets are in the Solar System?

• 7

• 8

• 9

Which planet is the smallest in diameter?

• Mars

• Mercury

• Pluto

Which group of planets are called terrestrial planets?

• Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars

• Earth, Jupiter, Neptune, Pluto

What lies between the orbits of Mars and Jupiter?

• Kuiper Belt

• Dwarf planet zone

• Asteroid belt

Which of the following is a gas giant?

• Venus

• Saturn

• Earth

Why is Pluto no longer classified as a planet?

• It does not orbit the Sun

• It has no atmosphere

• It is classified as a dwarf planet

What is the name of the region beyond Pluto thought to contain comets?

• Oort Cloud

• Asteroid Belt

• Kuiper Gap

Which planet has the highest average temperature due to its thick carbon dioxide atmosphere?

• Earth

• Venus

• Mercury

What is the shape of the planets' orbits around the Sun?

• Circular

• Ellipse

• Spiral

What force pulled together the dust and gas to form the Solar System?

• Magnetism

• Gravity

• Static electricity