Gravity Quiz

Gravity Quiz

Multiple Choice

1. The Earth has more mass, so it has a gravitational pull on the Moon, but the Moon doesn't have a gravitational pull on Earth.

• TRUE

• FALSE

False!

Earth pulls on the Moon and the Moon pulls on the Earth! Newtons' Law of Universal Gravitation says that all objects in the universe attract all other objects! See how the moon slightly pulls on the Earth, throwing it off-center!

Fill in the Blanks

2. The amount of gravitational force an object has depends on what 2 variables?

The mass of the object, and the distance the object is from another object.

In this picture, the arrows show the strength of the gravity. The arrows get longer when mass increases, and smaller when distance increases.

Multiple Choice

3. Which planet does the Sun have the least amount of gravitational force towards.

• Earth

• Venus

• Saturn

• Neptune

Neptune is the farthest away, so the distance between the objects is greater. As distance increases, gravity decreases.

Open Ended

4. Give an example of inertia, in your own words. HINT: Anything that shows a resistance to any change in an objects velocity.

Multiple Choice

5. The direction the moon travels in while orbiting the Earth is in a circular path.

• True

• False

FALSE! The moon is actually traveling in a straight line, at a constant speed & velocity.

Earth's gravity attempts to pull the moon in, but the moon is traveling too fast (it has inertia), so it continues in this orbit at a constant velocity.