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