Energy Transfer and Electric Currents

A player catches a moving ball. What happens to some of the ball's energy when it hits the player's mitt?

• It changes to light.

• It changes to electricity.

• It changes to sound.

• It is destroyed.

Tags

NGSS.MS-PS3-5

A circuit has a switch, a battery, and a bulb. When the switch is closed, the light turns on. What type of energy moves through the wires of this closed circuit?

• sound

• chemical

• electrical

• physical

Which of these uses electric currents to move energy from place to place?

• a toaster

• a campfire

• a baseball bat

• the sun

Zoe picks up a book she left by a sunny window. She notices the book is warm to the touch. What can Zoe conclude from her observation?

• heated air produces light

• light travels faster than sound waves

• light can transfer energy to objects and heat them

• heat travels faster than light

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Sydney went to her friend's house and pushed the button for the doorbell. What produced the sound she heard?

• The energy of her push sent an electric current into the air

• The energy from her push transformed directly into sound waves

• The force of her push OPENED a circuit and caused a hammer to hit a bell

• The force of her push CLOSED a circuit and caused a hammer to hit a bell.

Which of the following explains what happens when the light bulb lights up? When the switch is closed---

• energy moves through the wires and is changed into light energy in the bulb

• the bulb reflects sunlight until it shines brightly and makes heat energy.

• the physical properties of the battery are changed by the chemicals inside it

• the wires that connect the parts stop heat energy from flowing

Tags

NGSS.MS-PS3-5

What kind of energy does a radio transform into?

• sound

• thermal

• light

• motion

Tags

NGSS.MS-PS4-2

What kind of energy does a stove transform into?

• sound

• thermal

• light

• motion

Tags

NGSS.MS-PS3-3

For an electric current to transfer energy, the circuit must be ___________________.

• open

• closed

Which type of materials allows electric currents to flow through them?

• rubber

• metal

• wood

• plastic