Energy 4th grade

John has a flash light, blow dryer, radio, and alarm clock. Which item produces a different form of energy?

• flash light

• blow dryer

• radio

• alarm clock

A student plugs a pencil sharpener into the wall outlet. What energy does the pencil sharpener use?

• light

• motion

• sound

• electric

Tags

NGSS.MS-PS2-3

Lulu placed did the follow experiment:

1. Placed some salt on a paper plate.

2. Placed the plate on top of a speaker.

3. Turned on music.

4. Watched the salt dance to the music.

What did Lulu conclude from her observation?

• Energy can exist in form of light

• Energy can cause motion

• Energy is in food such a salt

• Energy is used to make a new substance

Tags

NGSS.MS-PS3-5

Joe squeezed and straw and blew into it making a high pitch sound. Joe then cut the straw. What kind of sound does he make now?

• It would make the same sound

• It would make a lower pitch sound

• It would not make a sound

• It would make a higher pitch sound

A student plays a drum with drum with drumsticks.

What produces the sound when the drumsticks hit the drum?

• vibration of the drumsticks

• vibration of the drum

• chemical energy

• magnetic energy

Tags

NGSS.MS-PS3-5

The picture shows some leaves moving away from a tree. What type of energy is most likely causing the leaves to move?

• heat

• light

• sound

• wind

Tags

NGSS.MS-ESS2-5

Hazen left the refrigerator door open. His mom told him to close it because the food inside would get too warm. Which statement explains why the food in the refrigerator would get warm if the door is let open?

• The refrigerator does not work if the door is left open.

• The warm air in the room moves inside the cool refrigerator.

• The light inside the refrigerator comes on and warms the food.

• The cool air in the refrigerator goes out of the door and into the room.

Tags

NGSS.MS-PS1-4