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Course: Alhussan Physics — Stage 8
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Curriculum

Alhussan Physics — Stage 8

Chapter 6: Forces, Motion and Pressure

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Chapter 7: Light

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Chapter 8: Magnetism and Electromagnets

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Chapter 9: Energy Resources

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Chapter 10: The Earth in Space (Galaxies and Asteroids)

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Quiz

9.3 Non-renewable resources: fossil fuels and nuclear power — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
How was coal formed?
From sea water
Made by people
From volcanoes
Buried trees compressed and heated over millions of years
2.
How efficient is a typical coal power station?
About 100%
About 90%
About 35–40%
About 5%
3.
Which term matches this definition? “Energy that is not transferred usefully, mostly heating the surroundings.”
Kinetic energy
Wasted energy
Useful energy
Potential energy
4.
True or false? Fossil fuels take millions of years to form.
True
False
5.
Oil and gas formed from dead ____ creatures.
desert
land
flying
sea
6.
True or false? Nuclear power stations burn uranium.
True
False
7.
The energy flow diagram shows a power station. What is the order of transfers?
Dr Dabour Hub Academy - figure 1
Chemical → thermal → kinetic → electrical
Electrical → chemical → thermal
Kinetic → chemical → electrical
Thermal → electrical → chemical
8.
A power station receives 1000 MJ of fuel energy and produces 380 MJ of electricity. What is its efficiency?
263%
380%
38%
620%
9.
A 35% efficient station uses 2000 MJ of fuel. How much energy is wasted?
700 MJ
1300 MJ
1965 MJ
2000 MJ
10.
Why will fossil fuels run out?
They evaporate
They are made daily
They are renewable
They take millions of years to form
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Part of Chapter 9: Energy Resources — see every lesson and quiz in this unit.
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