Magnetic Forces and Motion

One kind of force that works over a distance without touching is _____

• contact

• attract

• magnetism

• unbalanced

When five forces are acting on an object, and they cause the object to change its motion, then the forces are _______

• unbalanced

• balanced

• poles

• friction

You can ________ what will happen to objects undergoing repeating motion by studying patterns.

• force

• push

• predict

• repel

You have two bar magnets. The magnetic poles that are the same will ______, and the opposite magnetic poles will ______.

• attract, repel

• repel, attract

You can reduce friction by using a ________.

• balanced

• lubricant

• motion

• force

Friction requires objects to be in ________, or touching.

• motion

• pattern

• contact

• magnetism

When you use the brakes on a bike to come to a quick stop, the force that causes the wheel to stop moving is ________.

• force

• pull

• push

• friction

You can _________ a friend on a swing, and you can _________ on a rope during tug-of-war. Both are types of forces.

• pull, push

• repel, attract

• push, pull

• motion, pull

Objects that are changing position are said to be in _______.

• repel

• motion

• friction

• magnetism

When several forces are acting on an object that is at rest, and the object does not move, then the forces are _________.

• lubricant

• poles

• unbalanced

• balanced