Question

1. what process produces the light and energy from stars?

a) chemical reactions
b) nuclear fusion
c) evaporation
d) magnetism

1. which part of the atom is involved in nuclear fusion?

a) electrons
b) nucleus
c) orbitals
d) shells

1. which element is the main fuel for fusion in stars like the sun?

a) oxygen
b) carbon
c) hydrogen
d) nitrogen

Explanation:

Question 1

Stars produce light and energy through nuclear fusion, where hydrogen atoms fuse to form helium, releasing energy. Chemical reactions don't produce star - level energy, evaporation is a phase - change process, and magnetism isn't the energy - producing process for stars.

Nuclear fusion involves the combination of atomic nuclei. Electrons are involved in chemical reactions, orbitals are related to electron positions, and shells are electron - containing regions. So the nucleus is involved in nuclear fusion.

In stars like the Sun, the main fuel for fusion is hydrogen. Hydrogen nuclei fuse to form helium. Oxygen, carbon, and nitrogen are not the main fusion fuel in such stars.

Answer:

b) Nuclear fusion

Question 2