In nuclear ……1……, hydrogen nuclei ……2…… to form helium nuclei, releasing energy. Which words correctly complete gaps 1 and 2?

5054_w12_qp_11

MCQ

2012

Paper 1, Variant 1

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Which row is correct for nuclear fission and for nuclear fusion?

5054_w13_qp_11

MCQ

2013

Paper 1, Variant 1

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Which row is correct for nuclear fission and for nuclear fusion?

5054_w13_qp_12

MCQ

2013

Paper 1, Variant 2

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Which row states where nuclear fusion occurs and what nuclear fusion is?

5054_w15_qp_11

MCQ

2015

Paper 1, Variant 1

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A process called nuclear fusion takes place in the Sun. Discuss the process of nuclear fusion taking place in the Sun. On Earth, solar panels and solar cells are powered by energy from the Sun. Describe how this energy from the Sun travels to Earth.

5054_w17_qp_22

THEORY

2017

Paper 2, Variant 2

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Which statement about the reactor in a nuclear power station is correct?

5054_w18_qp_12

MCQ

2018

Paper 1, Variant 2

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Where is energy released by the fusion of hydrogen nuclei to form helium?

5054_w19_qp_11

MCQ

2019

Paper 1, Variant 1

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Where is energy released by the fusion of hydrogen nuclei to form helium?

5054_w19_qp_12

MCQ

2019

Paper 1, Variant 2

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Nuclear fusion is a reaction that occurs in the Sun and other stars. Explain what is meant by nuclear fusion. Describe the nuclear fusion reaction that takes place in the Sun. A star forms when the temperature of a large cloud of gas in space increases as the cloud collapses inwards. State the energy transfers that occur as the cloud collapses. The temperature increase starts a nuclear fusion reaction. Explain why the temperature of the star eventually reaches a steady value.

5054_w20_qp_21

THEORY

2020

Paper 2, Variant 1

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What is the purpose of moderators in nuclear reactors?

5054_s23_qp_12

MCQ

2023

Paper 1, Variant 2

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