U1L1: Forces and Interactions

What is the force that pulls everything toward Earth?

• Gravity

• Magnetism

• Friction

• Electricity

What happens when the forces acting on an object are balanced?

• The object remains in its current state of motion

• The object speeds up

• The object slows down

• The object changes direction

If Earth suddenly doubled in size, what would happen to our local gravity?

• It would increase

• It would decrease

• It would remain the same

• It would disappear

What is the effect of unbalanced forces on an object?

• They cause a change in speed and/or direction

• They keep the object at rest

• They maintain the object's current speed

• They have no effect

How does friction affect the motion of an object?

• It slows down the object

• It speeds up the object

• It has no effect on the object

• It changes the direction of the object

What role does gravity play in investigations?

• It pulls objects toward the most massive object nearby

• It pushes objects away from the most massive object nearby

• It has no effect on objects

• It only affects objects in space

What happens to a ball dropped by three friends in different parts of the world?

• Each ball moves 'down' in different directions

• All balls move in the same direction

• The balls float in the air

• The balls move upward