Lesson: Nuclear Fusion Physics • 9th Grade

In this lesson, we will learn how to describe the process of nuclear fusion and the advantages and disadvantages of nuclear fusion reactors.

Lesson Video

Sample Question Videos

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04:40

Lesson Worksheet

Q1:

The diagram shows 2 helium nuclei fusing to form a larger nucleus. Red circles represent protons and gray circles represent neutrons.

How many protons are in the resulting nucleus?

How many neutrons are in the resulting nucleus?

What element is produced by this reaction?

Q2:

The diagram shows 2 hydrogen nuclei fusing to form a different nucleus. What element does this reaction produce? Red circles represent protons and gray circles represent neutrons.

Q3:

The diagram shows the nuclei of the three isotopes of hydrogen. Red circles represent protons and gray circles represent neutrons.

Isotope (b) is called deuterium. How many protons does deuterium have?

How many neutrons does deuterium have?

Which of the following is the correct element symbol of deuterium?

Isotope (c) is called tritium. How many protons does tritium have?

How many neutrons does tritium have?

Which of the following is the correct element symbol of tritium?