Question

word bank:
nuclear, nuclei, nucleus, energy, hydrogen,
fusion, oxygen, shine, helium,
nucleosynthesis

1. the process that powers stars and

creates heavier elements is called
fusion.

1. in nuclear fusion, smaller atomic

combine to form a
larger nucleus.

1. the _____________ is the center of an

atom, made up of protons and
neutrons.

Explanation:

Question 1

Step1: Analyze the context

The process that powers stars and creates heavier elements related to fusion. From the word bank, "nuclear" is the appropriate adjective to describe fusion as nuclear fusion is the process in stars.

Step2: Fill in the blank

So the word should be "nuclear".

Step1: Recall nuclear fusion concept

In nuclear fusion, smaller atomic nuclei (plural of nucleus) combine. The word "nuclei" is the plural form needed here.

Step2: Select from word bank

From the word bank, "nuclei" fits.

Step1: Recall atom structure

The center of an atom made of protons and neutrons is the nucleus.

Step2: Choose from word bank

From the word bank, "nucleus" is the correct term.

Answer:

nuclear

Question 2