Gravity Quiz

What is gravity?

• A type of energy

• The force that pulls everything toward the Earth

• A measure of weight

• The speed at which objects fall

What does gravity do to two objects?

• Pushes them apart

• Makes them float

• Pulls them toward each other

• Causes them to orbit

Why are we all pulled toward the center of the Earth?

• Because the Earth is flat

• Because the Earth is spinning

• Because the Earth is the biggest object

• Because the Earth is the hottest object

What is the relationship between the mass of a body and the gravitational force it has?

• The more massive a body, the lesser the gravitational force it has.

• The mass of a body does not affect the gravitational force it has.

• The more massive a body, the greater the gravitational force it has.

• The gravitational force is the same for all bodies regardless of their mass.

What direction does gravity pull us and objects on Earth?

• Upwards

• Sideways

• Downwards

• In a circular motion

What would likely happen if there was zero gravity on Earth?

• We would still stick to the surface of the Earth.

• Objects would float away from the Earth's surface.

• The Earth's orbit around the Sun would be unaffected.

• Gravity would pull objects with even greater force.

Why do we "stick" to Earth?

• Because of the Earth's magnetic field.

• Because of the atmosphere.

• Because of the gravitational force.

• Because of the Earth's rotation.

What is a force?

• A type of energy that powers machines.

• A physical cause that changes or may tend to change the state of rest or the state of motion of an object.

• A chemical reaction between two substances.

• A measure of the amount of matter in an object.

What can unbalanced forces cause?

• They can cause an object to change color.

• They can cause a change in speed and/or direction of an object.

• They can cause an object to increase in mass.

• They can cause an object to remain at rest.

What is true about balanced forces?

• They always cause an object to move.

• They are different in size and same in direction.

• They are equal in size and opposite in direction and will not change an object's motion.

• They increase the strength of unbalanced forces.