Energy Unit Test

Energy can NOT be __________. It simply changes form.

• created or destroyed

• potential or kinetic

• hot or cold

• light or sound

What is a good example of potential energy?

• a roller coaster speeding down the hill

• a roller coaster at the top of a hill

As an object moves faster, it has more of what to transfer?

• weight

• energy

• density

• matter

When energy moves or travels, it forms _____.

• bubbles

• waves

• squares

• roads

Which of these does NOT create waves?

• water in the ocean

• light from the sky

• sound from a radio

• rain from the sky

Which one of these statements is usually true about waves?

• All kinds of waves are the same size.

• All waves move at the same speed..

• Waves don't move matter, just energy.

• Some waves do not move in a pattern.

There is one exception to the rule that waves don't move matter. What is it?

• When ocean waves push water onto the shore.

• When a fish swims through a lake or pond.

• When a seagull is floating on the ocean's water.

• When lightning makes the sound of thunder move.

How can heat transfer its energy?

• by conduction

• by convection

• by radiation

• all of the above

Heat energy always moves in which direction?

• from cold to hot

• from hot to cold

Light travels in a straight line.

• true

• false