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How devices transfer energy

4th grade (Year 5 in England) · 16 questions · Common Core: NGSS.4-PS3-2, NGSS.4-PS3-4 · England: KS3 Physics: Energy (energy changes and transfers)

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1
Question 1
Which device is mainly designed to give out light?
- A. headphones
- B. an electric toy car
- C. a traffic light
- D. a doorbell buzzer
2
Question 2
A solar panel transfers energy from…
- A. chemical to sound
- B. light to electrical
- C. electrical to light
- D. sound to light
3
Question 3
What is the main useful energy output of headphones?
- A. light
- B. sound
- C. heating (thermal)
- D. movement (kinetic)
4
Question 4
Which device is mainly designed to give out sound?
- A. a torch (flashlight)
- B. a washing machine drum
- C. a traffic light
- D. a loudspeaker
5
Question 5
A battery-powered torch (flashlight) is switched on. Which list shows the energy transfer?
- A. sound → light
- B. light → chemical → sound
- C. chemical → electrical → light (and some heat)
- D. kinetic → nuclear → light
6
Question 6
What is the main useful energy output of an electric heater?
- A. light
- B. sound
- C. heating (thermal)
- D. movement (kinetic)
7
Question 7
Which device is mainly designed to give out heating (thermal)?
- A. an LED lamp
- B. an electric fan
- C. a hairdryer's heating coil
- D. a traffic light
8
Question 8
A wind-up toy car is wound up and let go. What happens to the energy?
- A. thermal → nuclear
- B. elastic potential → kinetic
- C. light → sound
- D. kinetic → chemical
9
Question 9
What is the main useful energy output of a loudspeaker?
- A. light
- B. sound
- C. heating (thermal)
- D. movement (kinetic)
10
Question 10
Which device is mainly designed to give out heating (thermal)?
- A. a toaster
- B. headphones
- C. a washing machine drum
- D. an electric toy car
11
Question 11
Which energy is wasted by an old filament light bulb?
- A. thermal energy (heat)
- B. nuclear energy
- C. chemical energy
- D. light
12
Question 12
What is the main useful energy output of a torch (flashlight)?
- A. light
- B. sound
- C. heating (thermal)
- D. movement (kinetic)
13
Question 13
Which device is mainly designed to give out sound?
- A. an electric heater
- B. headphones
- C. a food blender
- D. an electric kettle
14
Question 14
A battery-powered torch (flashlight) is switched on. Which list shows the energy transfer?
- A. chemical → electrical → light (and some heat)
- B. light → chemical → sound
- C. kinetic → nuclear → light
- D. sound → light
15
Question 15
What is the main useful energy output of a torch (flashlight)?
- A. light
- B. sound
- C. heating (thermal)
- D. movement (kinetic)
16
Question 16
Which device is mainly designed to give out light?
- A. an electric heater
- B. a doorbell buzzer
- C. a hairdryer's heating coil
- D. an LED lamp

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