Energy

The pictures shows what a student observed when he looked through a hand lens at a penny.
What happens to light passing through a hand lens that makes the image of the penny appear larger? The light is-

• absorbed
• reflected
• refracted
• stopped

The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed
• stopped
• reflected
• refracted

A student placed a pencil in a cup of water.  The pencil appears broken because light-

• always travels in a straight line
• bends when it passes through water
• makes the water in the glass evaporate
• reflects the pencil on the water's surface

Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.

Which picture shows a circuit that will light the bulb when the switch is closed?

• A
• B
• C
• D

What is missing in this circuit to complete the flow of electricity?

• battery
• wire
• light bulb
• nothing

Electrical energy is changed to ______________ in light bulbs.

• light energy
• heat energy
• sound energy
• energy of motion

Electrical energy is changed to __________ in radios and televisions.

• light energy
• heat energy
• sound energy
• energy of motion

Sound is caused by? 

• force
• vibrations
• instruments
• air

This boy is using a bow and arrow.  What form of energy does a bow and arrow demonstrate? 

• mechanical
• sound
• thermal
• electrical