Topic 2 Test: Forces & Energy

Front

Why are the paper clips bunched at the ends of the magnet?

Back

The magnetic force at the poles of each magnet is strongest, so they attract more paper clips.

Front

Why are machines able to sort metal objects from other objects at a steel factory?

Back

The magnets in the machine attract the metal objects.

Front

Which of the following materials will not be picked up by a magnet? bolt, nail, piece of wood, paper clip

Back

piece of wood

Front

How is magnetism different from gravity?

Back

It attracts objects.

Front

Potential energy is __ ​ energy, while kinetic energy is __ energy.

Back

Stored/Motion

Front

What form of energy can be observed in a solar oven that uses the sun to cook food?

Back

light and heat energy

Front

How can potential and kinetic energy be observed in a friend pushing another friend on a swing?

Back

The friend on the swing has potential energy when they're pulled all the way back. It is released as kinetic energy once they start swinging.

Front

Energy cannot be _______ or _______, but it can be moved from one _______ to another.

Back

made, destroyed, object

Front

A student notices a light bulb is out on a set of string lights. The other bulbs are still lit. What kind of circuit is this?

Back

parallel circuit

Front

Why are you able to touch the wires when electricity is traveling through them without getting hurt?

Back

The rubber covering is an insulator that keeps the electricity from coming through.