Energy Transfer and Transformation

Sammy places his wet jeans into electric clothes dryer and pushes the power button.

Which statement tells what happens to Sammy's jeans in the dryer?

• Electrical energy changes into heat energy.

• Electrical energy changes into sound energy.

• Heat energy changes into electrical energy.

• Mechanical energy changes into electrical energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

All of the objects shown below use electricity. In each case, the electricity changes into other forms of energy when these objects are turned on and being used.

Which types of energy do the objects shown have in common?

• Heat and light

• Light and sound

• Heat and sound

• Light, heat, and sound

Shania loves to dance. She turns on her radio to find some music.

Which statement explains how the radio uses energy?

• It changes into light energy only.

• It changes into sound energy only.

• It changes into light energy only.

• It changes into light, sound, and heat energy.

Joshua’s favorite TV program is about to begin. He turns on the television. Which statement explains what happens to the electrical energy that powers the television?

• It changes into light energy only

• It changes into sound energy only.

• It changes into light energy only.

• It changes into light, sound, and heat energy.

Joaquin’s baby brother is upset because his toy has stopped moving and making noise. He asks Joaquin for help. Joaquin turns the knob on the toy shown.

What will happen when Joaquin lets go of the knob on the toy?

• Mechanical energy will change into heat energy.

• Mechanical energy will change into light energy.

• Electrical energy will change into mechanical energy.

• Mechanical energy will change into sound energy and motion.

Tags

NGSS.MS-PS3-5

Regina knows that heat energy can cause a substance to change states.

Which example shows how heat energy can change the state of matter of a substance?

• Butter melts and boils

• Steak cooks in a pan

• Lamp's bulb lights up a room

• The sun makes the pavement hot

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

All of the objects shown below use electricity. In which object is electrical energy changed into sound energy and mechanical energy?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-5

Tommy got a new sled for his birthday. He has a snow covered hill in his neighborhood, but some of the snow is melting. He is hoping for a fast, fun sled ride down the hill this afternoon. Look at the image of the hill.

Where will Tommy's sled go the fastest on this hill?

• Over the rocks at the bottom

• Through the grass

• In the slushy melted snow

• Down the icy slope

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Shelly was watching her brother play soccer on a cold Saturday morning. Her mom suggested she rub her hands together to help her warm up. Why is this a good suggestion?

• Shelly won't be focused on the cold.

• Rubbing two objects together can produce heat.

• Her fingers will become numb if she rubs long enough.

• Rubbing her hands together will get the dirt off her hands.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Sally is having fun playing at the park. As she goes down the slide she realizes she is going way to fast and will likely crash at the bottom.

What could help Sally slow down before she gets to the bottom of the slide?

• Climbing up the ladder

• Sitting at the top of the slide

• Rubbing her shoes on the slide

• Holding her hands up