Solar System Quiz for Grade 4

Which planet is known as the 'Red Planet'?

• Saturn

• Mars

• Venus

• Jupiter

What is the largest moon of Jupiter?

• Callisto

• Io

• Ganymede

• Europa

What is the shape of the Earth's orbit around the Sun?

• Elliptical

• Square

• Circular

• Hexagonal

What are rocky objects that orbit the Sun mostly found between Mars and Jupiter called?

• planets

• comets

• asteroids

• moons

What are small icy bodies that orbit the Sun and develop a glowing coma as they approach the Sun called?

• Asteroids

• Meteoroids

• Comets

• Planets

Which planet is closest to the Sun?

• Mars

• Earth

• Mercury

• Venus

Which moon of Saturn is known for its geysers of water ice?

• Rhea

• Titan

• Mimas

• Enceladus

What is the imaginary line around which a planet rotates called?

• spin

• orbit

• axis

• centerline

What is the name of the largest asteroid in the asteroid belt?

• Ceres

• Vesta

• Juno

• Hygiea

What is the name of the spacecraft that visited Pluto in 2015?

• Explorer

• New Horizons

• Galileo

• Voyager