Solar system

Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

One full orbit of an object around another object is called a ________.

• axis
• rotation
• revolution
• satellite

One of the main differences between the outer and inner planets is __________.

• The inner planets all have water
• the inner planets are much bigger than the outer planets
• the outer planets are gas planets
• the outer planets have rings, and the inner planets don't

Where is the asteroid belt found?

• between earth and mars
• Between Uranus and Neptune
• Between Mercury and Venus
• Between Mars and Jupiter

Select the order from smallest to largest.

• Sun, Milky Way, solar system, universe
• Sun, Milky Way, universe, solar system
• Sun, solar system, Milky Way, universe
• Sun, solar system, universe, Milky Way

Which is the largest object in our solar system?

• Sun
• Jupiter
• Earth
• Pluto

Which planet is closest to the sun?

• Uranus
• Mercury
• Neptune
• Earth

Which is the second closest planet to the sun?

• Earth
• Saturn
• Venus
• Mercury

Which planet is third from the sun?

• Mars
• Pluto
• Venus
• Earth

Which is the fourth planet from the sun?

• Mars
• Saturn
• Earth
• Jupiter