Conduction, convection and radiation
7th grade (Year 8 in England) · 16 questions · Common Core: NGSS.MS-PS3-3, NGSS.MS-PS3-4 · England: KS3 Physics: Energy (energy changes and transfers), KS3 Physics: Matter (energy in matter)
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Score/ 16
Question 1
Which kind of energy transfer is this: your hand warming a cold metal rail?
- A. conduction
- B. convection
- C. radiation
Question 2
Heat transfer: which statement is NOT true?
- A. Coats make heat.
- B. Metals are good thermal conductors.
- C. Air trapped in materials makes good insulation.
- D. Convection cannot happen in solids.
Question 3
Why does a thermos flask (vacuum flask) keep drinks hot?
- A. It traps cold out by magic
- B. Plastic makes heat
- C. It contains a heater
- D. The vacuum stops conduction and convection; shiny walls reduce radiation
Question 4
Which kind of energy transfer is this: a metal spoon in hot soup getting hot?
- A. conduction
- B. convection
- C. radiation
Question 5
Heat transfer: which statement is NOT true?
- A. Convection cannot happen in solids.
- B. Metals are good thermal conductors.
- C. Coats make heat.
- D. Dark, matt surfaces are good absorbers and emitters of infrared radiation.
Question 6
How does the Sun's energy reach Earth?
- A. by conduction through space
- B. through cables
- C. by convection currents in space
- D. by radiation, through empty space
Question 7
Which kind of energy transfer is this: a pan handle warming up?
- A. conduction
- B. convection
- C. radiation
Question 8
Heat transfer: which statement is NOT true?
- A. Cold flows into warm objects.
- B. Dark, matt surfaces are good absorbers and emitters of infrared radiation.
- C. Air trapped in materials makes good insulation.
- D. Metals are good thermal conductors.
Question 9
Why are saucepans often made of metal with plastic handles?
- A. Metal is a good conductor; plastic is a good insulator
- B. Metal is an insulator
- C. It is just for colour
- D. Plastic conducts heat better than metal
Question 10
Which kind of energy transfer is this: feeling the Sun's warmth on your face?
- A. conduction
- B. convection
- C. radiation
Question 11
Heat transfer: which statement is NOT true?
- A. Air trapped in materials makes good insulation.
- B. Radiation needs particles to travel.
- C. Convection cannot happen in solids.
- D. Dark, matt surfaces are good absorbers and emitters of infrared radiation.
Question 12
Why are saucepans often made of metal with plastic handles?
- A. Plastic conducts heat better than metal
- B. Metal is a good conductor; plastic is a good insulator
- C. It is just for colour
- D. Metal is an insulator
Question 13
Which kind of energy transfer is this: a pan handle warming up?
- A. conduction
- B. convection
- C. radiation
Question 14
Heat transfer: which statement is NOT true?
- A. Metals are good thermal conductors.
- B. Radiation needs particles to travel.
- C. Convection cannot happen in solids.
- D. Air trapped in materials makes good insulation.
Question 15
Why are saucepans often made of metal with plastic handles?
- A. Metal is a good conductor; plastic is a good insulator
- B. Metal is an insulator
- C. It is just for colour
- D. Plastic conducts heat better than metal
Question 16
Which kind of energy transfer is this: a pan handle warming up?
- A. conduction
- B. convection
- C. radiation
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