Question detail

Why is high temperature necessary for nuclear fusion to occur?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Nuclear fission and fusion

Question

A. To increase the mass of the nuclei
B. To overcome electrostatic repulsion between positively charged nuclei
C. To slow down the nuclei for better collisions
D. To cool the reaction and stabilize the nuclei

Answer

The correct answer is B: To overcome electrostatic repulsion between positively charged nuclei.

Explanation

The correct answer is B: To overcome electrostatic repulsion between positively charged nuclei. This supports the learning objective "(Physics only) Interpret simple diagrams of nuclei before and after fusion." in Nuclear fusion (physics only) because it uses the correct atomic and nuclear radiation relationship for Nuclear fission and fusion. The other options are less suitable because they do not match the required Nuclear fusion (physics only) idea: To increase the mass of the nuclei; To slow down the nuclei for better collisions; To cool the reaction and stabilize the nuclei.

Common mistake

Misinterpreting Fusion Diagrams

Students often confuse the arrangement of nuclei in diagrams, misidentifying the reactants and products of fusion.

Carefully analyze the diagrams, noting the labels and the number of protons and neutrons in each nucleus to accurately identify the fusion process.

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