Gravity

Earth's gravity makes heavy objects fall faster that light objects.

• True

• False

A person would weigh the same on earth on the other planets of our solar system as they do on Earth.

• True

• False

Planets are round because of gravity.

• True

• False

How does distance affect gravitational force?

• Gravitational force of two objects decreases as the distance between them decreases.

• The gravitational force between two objects increases as the distance between them increases.

• The gravitational force between two objects increases as the distance between them decreases.

• It doesn't.

How does mass affect gravitational force?

• The more mass an object has, the less gravitational force it exerts

• Gravitational force between two objects increases when the mass of either or both objects increases

• It makes objects bounce higher

• They have nothing to do with each other

The following information depicts Sofia and what she weighs on different planets. Use the information to list the planets in decreasing order (from heaviest to lightest) of mass.

Venus -- 38 kg

Earth -- 41 kg

Mars -- 17 kg

Juptiter -- 153 kg

Proxima B -- 52 kg

The gravitational forces of the planets Mercury and Mars are almost the same (3.7 m/s²) even though Mars is about twice the size of Mercury. Explain why their gravity is the same.

• Mercury and Mars have similar masses even though their sizes are different and gravity depends partly on mass.

• Both planets are made up of the same type material

• It is because even though Mercury is smaller than Mars, it is much closer to the Sun.

• Mercury is the stronger God in Greek mythology

What would happen to an object in orbit around a planet without gravity pulling it down?

• It would stop moving and float in mid-air

• The object would rise up

• It would continue to fall because what goes up must come down

• The object would continue to move forward at a constant velocity

If the Earth were replaced by an object with the same mass but much smaller in size, the moon would __________

• continue to orbit the new object as if nothing changed

• get closer to the object to make up the space

• fly off into space

• crash violently into the new object

The acceleration due to gravity is the same for all falling objects when there is no air resistance.

• True

• False