Nuclear Changes and Energy Quiz

Which of the following processes involves the splitting of a heavy nucleus into two lighter nuclei, releasing energy in the process?

• Fusion

• Fission

• Radioactive decay

• Ionization

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NGSS.HS-PS1-8

In the process of nuclear fusion, which of the following occurs?

• Two light nuclei combine to form a heavier nucleus, releasing energy.

• A heavy nucleus splits into two lighter nuclei, releasing energy.

• An electron is emitted from the nucleus.

• A neutron is absorbed by the nucleus.

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Which of the following best describes radioactive decay?

• The process of combining two nuclei to form a heavier nucleus.

• The spontaneous transformation of an unstable atomic nucleus into a lighter one.

• The splitting of a heavy nucleus into two lighter nuclei.

• The absorption of a neutron by a nucleus.

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NGSS.HS-PS1-8

Which of the following particles is typically emitted during alpha decay?

• Electron

• Proton

• Helium nucleus

• Neutron

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In beta decay, a neutron in the nucleus is transformed into which of the following?

• A proton and an electron

• A proton and a neutron

• An electron and a positron

• A neutron and a neutrino

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What is the primary source of energy in the sun?

• Nuclear fission

• Nuclear fusion

• Radioactive decay

• Chemical reactions

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Which of the following is a common product of nuclear fission reactions?

• Helium

• Uranium

• Krypton

• Hydrogen

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Which type of radioactive decay results in the emission of a positron?

• Alpha decay

• Beta-minus decay

• Beta-plus decay

• Gamma decay

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What is the role of a neutron in a nuclear chain reaction?

• It absorbs energy.

• It initiates the fission process.

• It combines with protons to form helium.

• It stabilizes the nucleus.

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Which of the following best describes gamma decay?

• Emission of a helium nucleus

• Emission of an electron

• Emission of a photon

• Emission of a neutron

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