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Unit Quiz

Energy

This quiz will help you to assess your learning of key concepts and knowledge in this unit.

Q1.Which energy store is increased when an object is heated?

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Q2.What is the power of a motor that transfers 550 J of energy in 11s?

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Q3.Which of these is a correct equation for percentage efficiency?

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Q4.If a 0.75 efficient motor produces 150 W of useful power, what was the input power?

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Q5.Which energy store increases as a rubber band is stretched?

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Q6.A box is pushed along the ground. Which energy transfer is involved?

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Q7.A mobile phone screen lights up. How is energy transferred from the battery to the screen?

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Q8.A bulb turns on and lights a room. How is energy transferred from the bulb to light up the room?

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Q9.What is the elastic potential of an object with spring constant k = 10 N/m that has an extension of 0.5 m

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Q10.What is the correct definition of specific heat capacity?

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Q11.Which of these is an advantage of solar power?

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Q12.Which of these energy resources can respond to changes in demand for electricity?

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Q13.Which of these is an advantage of nuclear power? Choose 4

Select four (4) boxes

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Q14.Select the four non-renewable resources

Select four (4) boxes

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Q15.Which of these is an advantage of fossil fuels?

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Q16.What is the kinetic energy of an object with mass 4 kg moving at a speed of 5 m/s?

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Q17.What is the correct equation linking kinetic energy, mass and speed?

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Q18.Which is the correct statement about closed systems?

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Q19.Which factors will affect the elastic potential energy store? (select two)

Select two (2) boxes

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Q20.What is the definition of the gravitational potential energy store?

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Q21.What effect should having thicker insulation have on the rate of cooling?

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Q22.What does renewable mean?

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Q23.Which of these is the correct definition of power?

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Q24.How long would it take a 400 W motor to transfer 2000 J of energy?

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Q25.What is the unit for spring constant?

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