wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Nuclear Fusion Practice

Total questions: 21

Worksheet time: 15mins

Name
Class
Date
1.

_______ is when a large nucleus is split into smaller nuclei releasing large amounts of energy.

a)

fusion

b)

fission

c)

radioactive decay

d)

gamma radiation

2.

_______ is when two small nuclei collide and join together to form a larger nucleus releasing large amounts of energy.

a)

fission

b)

beta decay

c)

alpha decay

d)

fusion

3.
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
4.
Do all stars make energy through fusion?
a)
Yes
b)
No
c)
Just our sun
d)
Only large stars
5.

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

a)

Helium

b)

Carbon Dioxide

c)

Oxygen

d)

Light

6.
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
7.

Small, negatively charged subatomic particles that are located around the nucleus are called __________

a)

protons

b)

neutrons

c)

electrons

d)

dust

8.

Particles that are located in the nucleus of an atom and no charge ____________

a)

proton

b)

neutron

c)

electron

d)

dust

9.

A dense positively charged sub atomic particle is called a _________

a)

proton

b)

neutron

c)

electron

d)

plasma

10.

The process of fusion happens in a star's

a)

Corona

b)

Convection Zone

c)

Radiative Zone

d)

Core

11.

The process of fusion requires

a)

High heat and high pressure

b)

Cool temperatures and no gravity

c)

A snack

d)

High heat and low pressure

12.

Main Sequence stars can only fuse up to this element on the periodic table

a)

Gold

b)

Carbon

c)

Helium

d)

Iron

13.

The largest element that any "star" can create is.

a)

Helium

b)

Carbon

c)

Iron

d)

Uranium

14.

Any element larger than Iron on the periodic table is created by a/an

a)

Supernova

b)

Super Giant Star

c)

Main Sequence star

d)

Alchemists

15.
What is the first stage of the life cycle of a star for all stars?
a)
nebula
b)
protostar
c)
main-sequence
d)
red giant
16.
In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.
a)
nebula
b)
protostar
c)
main-sequence
d)
supergiant
17.
What is the heaviest element that can be created (through fusion) inside of a Main Sequence Star?
a)
Helium
b)
Hydrogen
c)
Iron
d)
Carbon
18.
Can light escape a black hole?
a)
yes
b)
no
19.

The largest element that any star can create is _______.

a)

Iron

b)

Helium

c)

Hydrogen

d)

Uranium

20.

In what stage of a life cycle of star are elements BIGGER than Iron created?

a)

Main Sequence Stars!

b)

Neutron Stars

c)

Red Giants

d)

Supernova!

21.

Red Giant phase stars fuse up to _________

a)

Helium Only

b)

Hydrogen Only

c)

Up to Uranium

d)

Up to carbon, nitrogen...