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Big Idea 5 Review Game
Test Description: Energy transformations
Instructions: Answer all questions to get your test result.
1) The filaments in a toaster acts like a resistor and changes some of the electrical energy into __?__.
A
sound
B
heat
C
motion
D
light
2) What does electric current change into after it passes through an LED?
A
segments
B
photons
C
heat
D
electrons
3) Which machine does NOT use an electromagnet?
A
LED
B
electric motor
C
electric car
D
hearing aid
4) In a hearing aid, electrical energy is changed into __?__.
A
mechanical energy
B
light energy
C
sound waves
D
heat waves
5) An electric motor changes electrical energy into __?__ in order to make the car move.
A
mechanical energy
B
light energy
C
heat energy
D
sound energy
6) The source of electricity for an electric car is a __?__.
A
LED
B
resistor
C
battery
D
circuit
7) to send out energy in waves or rays
A
speaker
B
resistor
C
radiate
D
photon
8) a device that converts electrical energy into light
A
electron
B
LED
C
electromagnet
D
filament
9) a path along which electric current flows
A
circuit
B
electric motor
C
electromagnet
D
conductor
10) a tiny unit of light energy
A
microphone
B
radiate
C
resistor
D
photon
11) waves of energy created by vibration
A
speaker
B
radiate
C
resistor
D
sound waves
12) a device that converts sound waves into electric current
A
microphone
B
radiate
C
photon
D
resistor
13) a device that converts electric current into sound waves
A
sound waves
B
speaker
C
resistor
D
radiate
14) a magnet created by electricity flowing through a wire coiled around an iron core
A
electron
B
electric motor
C
filaments
D
electromagnent
15) a device that changes electrical energy into mechanical energy
A
circuit
B
conductor
C
electric motor
D
electric current
16) the energy of motion
A
light energy
B
mechanical energy
C
sound energy
D
thermal energy
17) a force that attracts or pushes away other magnets
A
microphone
B
mechanical energy
C
magnetic force
D
LED
18) the flow of electricty
A
electric current
B
electron
C
conductor
D
photon
19) something that limits the flow of electric current
A
conductor
B
circuit
C
resistor
D
switch
20) part of a circuit that starts or stops the flow of electric current
A
filament
B
resistor
C
conductor
D
switch
*select an answer for all questions
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