Solar System and Gravity Quiz

What force keeps the planets in orbit around the Sun?

• Wind

• Gravity

Why do moons orbit planets?

• Because of gravity

• Because of sunlight

Which planet is a gas giant closest to the Sun?

• Jupiter

• Saturn

What is a main difference between terrestrial planets and gas giants?

• Terrestrial planets are smaller and have rocky surfaces, while gas giants are larger and made mostly of gases.

• Terrestrial planets are made of gas, while gas giants are made of rock.

Why was Pluto reclassified as a dwarf planet in 2006?

• It does not have enough mass to clear its neighborhood around its orbit.

• It is made of gas.

What are asteroids mostly made of?

• Irregular shaped rocks

• Water

What causes ocean tides on Earth?

• The Moon's gravitational pull

• The Sun's heat

What is an orbit?

• A regular, repeating path that one object in space takes around another one

• A type of planet

Why do Saturn’s rings stay in place?

• Because of Saturn’s gravitational pull

• Because of the Sun’s light