10
lesson pretestMultiple Choice

Pretest

Question 10 • Physics

What are the products of step 1 of the hydrogen fusion process in the Sun? Choose four correct answers.

Answer
A
a positron
B
a neutrino
C
helium
D
an electron
E
hydrogen
F
energy

Explanation

In the first step of hydrogen fusion, two hydrogen nuclei combine to form deuterium, which is a type of hydrogen. The reaction also releases a positron, a neutrino, and energy. Helium is produced in later steps, not this first one.

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