The Sun is the only ___________ in our solar system.

How many planets are in our solar system? (not including Pluto)

Which planet is the largest planet in our solar system?

What are the rings of Saturn made of?

Which planet is the only planet to spin on its side?

Which planet is made mostly of liquid water?

What planet is close to the same size as Earth?

Earth is the __________ planet from the Sun.

What is the hottest planet?

Which is the smallest planet?

How many days does it take the Earth to revolve around the Sun?

What keeps the Moon in orbit around Earth?

Two objects have a certain gravitational force between them. What would happen if the mass of one of the objects suddenly increased?

Why are Earth, other planets, and most planetary objects spherical?

What two things determine the gravity of an object?

Which of the following will not change in different gravitational fields?

A person would weigh more on Jupiter than on Earth because...

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