Earth and Space Unit Review

What do inner planets have in common?

• They are made of gas.
• They have rings.
• The are made of rock.
• They have many moons.

What is a similarity between comets and asteroids?

• The both orbit the sun.
• They both orbit earth.
• They both have same orbital speeds.
• They both have ice and dust.

What is a difference between comets and asteroids?

• They have different rotation speeds.
• Comets are not made of rock.
• Asteroids have tails and comets do not.
• They have different orbital speeds.

Which of the following is in the correct order from biggest to smallest.

• Moon, Earth, Sun
• Earth, Moon, Sun
• Sun, Earth, Moon
• Earth, Sun, Moon

Which celestial body orbits fastest in space?

• The earth around the sun.
• The sun around the earth.
• The moon around earth.
• The moon around the sun.

Choose the correct answer.

• Moon orbits the earth; earth orbits the sun.
• Sun orbits the moon; moon orbits earth.
• Moon orbits sun; sun orbits earth.
• Earth orbits moon; moon orbits earth.

What is a difference between the sun and earth?

• The earth is made of gas and the sun is made of rock.
• The earth is made of rock and the sun is made of gas.
• The earth has one moon and the sun has many moons.
• The earth has an atmosphere and the sun does not.

What is the correct order of the planets from the sun?

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus
• Mercury, Earth, Venus, Mars, Jupiter, Saturn, Uranus, Neptune
• Neptune, Jupiter, Earth, Mercury, Mars, Saturn, Venus, Uranus
• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

What is a similarity between the sun and earth?

• They are both made of rock.
• They both give off light.
• They both have atmospheres.
• They both are made of gases.

What is the biggest celestial body in our solar system?

• Jupiter
• The Sun
• Earth
• Saturn