Unit 2 - Energy

Finish the sentence:

The faster an object is moving, ...

• the faster it stops.

• the less energy it uses.

• the more energy it can transfer.

Select an example of heat moving from warm objects to cool objects.

• a drum creating vibrations

• a moving foot transferring energy to the soccer ball

• pedaling a bike

• the energy from the burning wood transferred to a marshmallow

Finish this sentence:

Wavelength measures the distance between wave peaks. The closer the peaks of the wave are to each other,

• the less energy the waves have.

• the more energy the waves have.

What is energy?

• the ability to do work

• the weight and speed of a moving object

• another name for collision

How do light waves move?

• in straight lines

• from object to the source of light

• on top of water

Some animals, such as dolphins and whales, communicate underwater by using sound waves. What is that sound transfer called?

• dolphin location

• echo sensation

• echolocation

• underwater sound transfer

The images we see are upside down. What part of our body flips them?

• eye

• brain

• lens

• camera

What helps people turn food into energy?

• the sun

• vitamins and minerals

• plants

• their digestive system

True or False? The heavier an object, the more energy it can transfer.

• TRUE

• FALSE

What do we call the process of energy moving from one place to another?

• electrical energy

• energy transfer

• stored energy