Year 10 Energy Question Preview (ID: 10266)


Year 10 Physics Questions On Enrgy Transfer, Energy Efficiency And Eneryg Saving Mthods. TEACHERS: click here for quick copy question ID numbers.

Which of these applies to silver materials?
a) Good radiators of heat energy
b) Good emitters of heat energy
c) Poor emitters of heat energy
d) Good absorbers of heat energy

What does a step up transformer do?
a) Increases current and decreases voltage
b) Increases voltage and decreases current
c) Increases voltage and increases current
d) Decreases voltage and decreases current

Cavity wall insulation costs £3000 and saves £120 a year. What is the payback time?
a) 1 year
b) 30 years
c) 10 years
d) 25 years

A 1500W hairdryer is on for 30 mins. How much energy is transferred in kWhs?
a) 0.75
b) 450000
c) 750
d) 45

How much energy is needed to heat up 2kg of water by 10 degrees. (c=4000)
a) 200J
b) 80J
c) 40,000J
d) 80,000J

What is power measured in?
a) Joules
b) Kilowatt hours
c) Watts
d) Newtons

Through what process does heat energy from the sun reach Earth?
a) Conduction
b) Convection
c) Radiation
d) All of the above

The process of warm air rising cooling and sinking is known as what?
a) Conduction
b) Convection
c) Radiation
d) All of the above

What is the name for the transfer of energy by vibrations?
a) Conduction
b) Convection
c) Radiation
d) All of the above

A good reason for putting pylons overground is...
a) They are an eyesore
b) Birds can rest on them
c) People can climb them
d) They are easily accessed if broken

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