Forces and Motion Review

Motion is a change in _______ of an object.

• size
• speed
• direction
• position

Which of these is an example of putting force on an object?

• kicking a ball
• hammering a nail
• stirring a spoon
• all of the above

A cup is resting on the table.  What kind of forces must be acting on the cup?

• The cup must not have any forces acting on it.
• The forces acting on the cup must be balanced.
• The forces acting on the cup must be very weak.
• The book must have an unbalanced for acting on it.

The force that pulls down is called...

• gravity
• balance
• unbalanced
• dynamometer

Which is a tool that scientists can use to measure force?

• spring scaled
• ruler
• thermometer
• stopwatch

During a tug of war game, what happens if one team stops pulling?

• The forces stay the same.
• The forces are balanced.
• The forces are unbalanced.
• There are no forces.

Which is an example of back and forth motion?

• A ball rolling across a field
• A top turning
• A child moving on a swing
• A child walking down the sidewalk

You and your friend spin a jump rope in a circle.  What will happen if you keep spinning the jump rope?

• The rope will stop moving.
• The rope will keep moving in a circle.
• The rope will stop moving in a pattern.
• The rope will change directions.

Where are magnetic forces strongest on a bar magnet?

• near the poles of a magnet
• in the middle of the magnet
• at the north pole of a magnet
• everywhere equally along the magnet

An electromagnet is a magnet that...

• has only one pole.
• can be turned on and off.
• always pushes objects.
• produces electricity.