The Pull of Earth's Gravity

What is gravity?

• A) A force of attraction between any two objects

• B) A force of repulsion between any two objects

• C) A force of attraction between any two masses

• D) A force of repulsion between any two masses.

When does the pull of gravity decrease?

• When the total mass of the two objects increases

• When the total mass of the two objects decreases or they are further apart

• When the distance between the objects decreases

• When the distance between the objects remains constant.

What is the reason moons orbit planets?

• Because of gravitational attraction

• Because of magnetic fields

• Because of solar winds

• Because of atmospheric pressure

On the Moon, you could throw a ball about how many times higher than on Earth?

• Two times

• Four times

• Six times

• Eight times

Earth's gravity affects the Moon by:

• Keeping it in orbit around Earth

• Pushing it away from Earth

• Having no effect on it

• Causing it to spin faster

Earth's tides are primarily caused by:

• the gravitational pull of the Moon and the Sun

• the rotation of the Earth

• the wind patterns across the oceans

• the Earth's magnetic field

If a meteor does not break apart and burn up in the atmosphere, what can happen?

• It will disappear

• It can hit Earth's surface

• It will turn into a star

• It will orbit the Earth

The diagram shows a meteorite impact. What is the first step in the process?

• The meteorite enters the Earth's atmosphere.

• The meteorite impacts the Earth's surface.

• The meteorite creates a crater.

• The meteorite disintegrates in the atmosphere.