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Radioisotopes and Nuclear Energy

Total questions: 50

Worksheet time: 35mins

Name
Class
Date
1.
What is an atom that has an unstable nucleus and undergoes radioactive decay?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
2.
What is the process by which nuclei emit particles and rays?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
3.
This process requires a radioactive fuel source, usually Uranium 235 or Polonium 239
a)
Fusion
b)
Chain Reaction
c)
Fission
4.
Produces temperatures in excess of 40,000,000 degrees celsius.
a)
Chain Reaction
b)
Fission
c)
Fusion
5.
When small nuclei combine to produce a nucleus of greater mass
a)
Fusion
b)
Fission
c)
Chain Reaction
6.
The splitting of a nucleus into smaller fragments accompanied by the release of neutrons and a large amount of energy
a)
Fusion
b)
Fission
c)
Chain Reaction
7.
It is the energy producing reaction that takes place in our sun and other stars.
a)
Fission
b)
Chain Reaction
c)
Fusion
8.
When neutrons produced react with other fissionable atoms, continuing the fission.
a)
Fission
b)
Chain Reaction
c)
Fusion
9.
The energy produced can be controlled and harnessed to produced electricity.
a)
Chain Reaction
b)
Fission
c)
Fusion
10.
Nuclear Power is - 
a)
Renewable
b)
Non-renewable
11.
Nuclear power uses ____ for fuel.
a)
steel
b)
coal
c)
uranium
d)
hydrogen
12.
Nuclear energy uses _____ to turn turbines to power a generator.
a)
wind
b)
water
c)
steam
d)
solar
13.
Splitting a uranium atom is called - 
a)
fission
b)
fusion
14.
Energy is stored in the ___ of an atom.
a)
proton
b)
neutron
c)
electron cloud
d)
nucleus
15.
What is an advantage  of nuclear energy?
a)
radioactive waste
b)
no pollution
c)
we will never run out
d)
it is the safest way to make energy
16.
All of the following are problems of nuclear energy except ---
a)
storage of radioactive fuel
b)
pollution
c)
security concerns
d)
natural disasters (tsunamis, earthquakes, etc.)
17.
Spent nuclear fuel (already used) is stored at -
a)
a landfill
b)
on site at the nuclear power plant
c)
a repository in Nevada
18.
True or False:  During nuclear decay atoms of one element can change into atoms of a different element altogether. 
a)
True
b)
False
19.
This is the type of radiation that naturally occurs in the environment and is generally safe.
a)
background radiation
b)
environment radiation
c)
ionizing radiation
20.
What would two different isotopes of an atom have in common?
a)
Number of neutrons 
b)
Number of protons
c)
Atomic weight 
d)
Atomic mass
21.
An isotope of an element has the same number of _________, but a different number of _________.
a)
Protons, electrons
b)
Protons, neutrons
c)
Electrons, neutrons
22.
Both a fusion reaction and a fission reaction produce 
a)
heat (energy)
b)
light
c)
sound
d)
magnetism
23.
What makes something radioactive?
a)
elements with an atomic number above 81
b)
an unstable nucleus
c)
contaminated sewage
d)
It decays over time
24.

Marie Curie was the first women to ____

a)

Win a noble prize

b)

Win a noble prize in chemistry

c)

Win a noble prize in physics

d)

Win a noble prize in chemistry and physics

e)

Have an element name after her

25.

The ____ is a unit of measure used to describe the activity of a radioactive substance. It is based on the number of atoms in one gram of Ra-226 that will decay in one second.

a)

Geiger

b)

Curie

c)

Alpha

d)

Gamma

e)

Beta

26.
What are the two main elements (gases) that make up the Sun? 
a)
Carbon and Helium
b)
Iron and Hydrogen
c)
Hydrogen and Helium
d)
Carbon and Hydrogen 
27.

What is the function of the cooling towers of the nuclear reactor?

a)

to create steam

b)

to spin the turbine

c)

to limit the heat produced by the uranium

d)

to turn steam back into water

28.
Which type of power plant is this?
a)
Coal Power Plant
b)
Nuclear Power Plant
c)
Solar Power Plant
d)
Hydroelectric Power Plant
29.
What is the difference between a nuclear bomb and a nuclear power plant?
a)
Bomb releases energy all at once, power plant release is slow and controlled.
b)
Nothing much... pretty much the same.
c)
Power plant releases more energy, faster.
d)
One uses nuclear energy, one uses coal.
30.
What controls the reaction within a nuclear reactor?
a)
Control Rods
b)
Moderator
c)
Containment building
d)
Reactor Vessel
31.
Complete the phrase: 'The longer an element's half-life...'
a)
...the longer it will take to decay
b)
...the more radioactive it is
c)
...the less radioactive it is
d)
...the rarer it is
32.

Nuclear energy is

a)

the energy obtained from the total mass during a radioactive decay

b)

the energy obtained from the mass defect during an isotope making

c)

the energy obtained from the total mass during a fusion reaction

d)

the energy obtained from the mass defect during a radioactive decay

33.

The mass which is lost during the decay is called the

a)

mass

b)

effective mass

c)

mass defect

d)

mass of proton

34.

Radium-226 undergoes alpha decay to become radon-222. The equation is :

226 Ra 222 Rn + 4 He.

88 86 2


Calculate the energy released if

Ra-226 = 226.025406 u

Rn-222 = 222.017574 u

He = 4.002603 u

a)

7.81 x 10 - 11 J

b)

7.81 x 10 - 12 J

c)

7.81 x 10 - 13 J

d)

7.81 x 10 - 14 J

35.

What is the name of the parts coloured green in the diagram?

a)

Boron control rods

b)

Uranium fuel rods

c)

Graphite core

d)

Coil and magnet

36.

Based on the diagram state the energy change in a nuclear reactor

a)

nuclear energy --> heat energy --> electrical energy

b)

nuclear energy --> heat energy --> kinetic energy --> electrical energy

c)

heat energy -->nuclear energy --> kinetic energy --> electrical energy

d)

heat energy -->nuclear energy --> heat energy --> kinetic energy --> electrical energy

37.

Below are steps for safety precautions when handling radioactive substance except

a)

wear Safety badge

b)

Safety clothing like gloves, lab coats

c)

wear earplug

d)

use thong

38.
this formula is used to describe the slight loss of mass in an atom that generates heat energy...
a)
E=mc^5
b)
E=vc^2
c)
E=mt^7
d)
E=mc^2
39.
Which of the following is the correct order of events in a nuclear power plant?
a)
Uranium reactor, generator, turbine, transformer
b)
Transformer, turbine, generator, uranium reactor
c)
Uranium reactor, turbine, generator, transformer
d)
Turbine, Uranium reactor, Generator, Transformer
40.
This is an example of ---
a)
Radioactive Decay
b)
Nuclear Fission
c)
Nuclear Fusion
d)
Fossil fuel reaction
41.
Why do scientists most want to learn more about fusion?
a)
To win the Nobel prize
b)
To make energy for people to use
c)
To destroy the world
d)
To know more about stars
42.
Where does radioactivity have application in our lives?
a)
Medicine
b)
Energy (electricity)
c)
Agriculture
d)
All of the above
43.
What does the c mean in e=mc^2?
a)
Speed of light
b)
Specific heat
44.

The total annual energy consumption of the United States is 1 * 1020 Joules.


If you were capable of converting mass to energy with 100% efficiency, how much mass would you need to produce this much energy?

a)

3.0 * 1028 kg

b)

9.0 * 1036 kg

c)

3.3 * 1011 kg

d)

1.1 * 103 kg

45.

Which scientist discovered that energy is equal to the mass of an object times the speed of light squared (E = mc2)?

a)

Niels Bohr

b)

Albert Einsteiin

c)

J.J. Thompson

d)

Ernest Rutherford

46.

Thyroid glands can be traced by injecting

a)

iodine-131

b)

sodium-25

c)

phosphorus-32

d)

cobalt-60

47.

The age of artifacts or fossils can be determined by

a)

carbon-12

b)

carbon-14

c)

sodium-23

d)

cobalt-60

48.

The function of the moderator in a nuclear is to........

a)

Stop chain reaction

b)

Absorb neutrons

c)

Reduce the speed of neutrons

d)

Reduce temperature

49.

Which is the most commonly used moderator?

a)

Graphite

b)

Sodium

c)

Deuterium

d)

Heavy water

50.

The function of control rods is nuclear plants is to

a)

control temperature

b)

control radioactive pollution

c)

control absorption of neutron

d)

control fuel consumption

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