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Nuclear Fusion Review

Total questions: 12

Worksheet time: 7mins

Name
Class
Date
1.
In nuclear fusion, smaller atoms are forced together to create larger atoms. Does this process release, absorb or maintain energy?
a)
Absorb energy
b)
Maintain energy
c)
Release energy
2.
the smallest particles of matter that still retain the characteristics of that element are called
a)
atoms
b)
nuclei
c)
dust 
d)
molecule
3.
Do all stars make energy through fusion?
a)
Yes
b)
No
c)
Just our sun
d)
Only large stars
4.

Define nuclear fusion.

a)

Nuclear fusion – combining lighter atoms to make heavier ones – is what makes it possible.

b)

Nuclear fusion – splitting lighter atoms to make heavier ones – is what makes it possible.

c)

Nuclear fusion – combining heavier atoms to make lighter ones – is what makes it possible.

d)

Nuclear fusion – splitting heavier atoms to make lighter ones – is what makes it possible.

5.

This process, called nuclear fusion, is the energy source of all __________.

There may be more than one answer for this questions.

a)

planets

b)

suns

c)

stars

d)

plants

6.

When hydrogen is "fused" together on the Sun, what new element is created?

a)

Helium

b)

Carbon Dioxide

c)

Oxygen

d)

Light

7.

Read the sentence from the section "Two Key Parts Make Up Nuclear Fusion."


This means the end of the line for small stars, who quietly fade into darkness after they have used up their hydrogen.


The phrases "end of the line" and "fade into darkness" in the sentence give the reader a sense ____.

a)

that the stars suddenly die

b)

that the stars gradually disappear

c)

that the stars become too dim to see

d)

that the stars need more hydrogen for energy

8.
When is a star born?
a)
when the nebula starts spinning
b)
nuclear fusion starts
c)
when gas and dust starts to contract
d)
when x rays get emitted
9.
An explosion that occurs at the end of a massive star’s life is a              
a)
black hole
b)
supernova
c)
white dwarf
d)
nebula
10.
small, negatively charged subatomic particles that flay around the nucleus are called 
a)
protons
b)
neutrons
c)
electrons
d)
dust
11.
particles that are located in the nucleus of an atom and no charge
a)
proton
b)
neutron
c)
electron
d)
dust
12.
a dense positively charged sub atomic particle is called a 
a)
proton
b)
neutron
c)
electron
d)
plasma