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JCE (Botswana) Sources of Energy — practice questions

Explore 3 free Sources of Energy questions in JCE (Botswana) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Sources of Energy questions and exercises with answers

Showing questions 1–3 of 3.

Which three fuels are grouped together as the fossil fuels?Read the answer and worked solution →Why are wind and falling water called renewable energy sources?Read the answer and worked solution →What is the splitting of an atomic nucleus into smaller parts called?Read the answer and worked solution →

Worked practice questions

Which three fuels are grouped together as the fossil fuels?

  1. Wood, oil and gas
  2. Coal, wind and gas
  3. Coal, oil and sun
  4. Coal, oil and gas
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Correct answer: D. Coal, oil and gas

1. Fossil fuels formed from the remains of plants and animals of long ago. 2. The three of them are coal, oil and natural gas. 3. Wind and sunlight are renewable sources and are never fossil fuels. _Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Non-renewable sources_

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Why are wind and falling water called renewable energy sources?

  1. They are not used up
  2. They are always cheap
  3. They are very simple
  4. They are always warm
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Correct answer: A. They are not used up

1. A turbine takes energy from moving air or falling water. 2. The air and the water themselves are not destroyed in the process. 3. Both keep being replaced by the weather and the water cycle. 4. A source that keeps being replaced is called renewable. _Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Renewable sources_

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What is the splitting of an atomic nucleus into smaller parts called?

  1. Nuclear fusion
  2. Nuclear cooling
  3. Nuclear fission
  4. Nuclear bonding
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Correct answer: C. Nuclear fission

1. The nucleus at the centre of an atom is held together by very strong forces. 2. Breaking a nucleus apart releases a large amount of energy, and this is fission. 3. Joining two nuclei into one is the opposite process, called fusion. 4. Uranium is one of the substances used as a fuel for fission. _Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Nuclear fuels_

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