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NUCLEAR ENERGY

Total questions: 66

Worksheet time: 38mins

Name
Class
Date
1.
What is radioactivity?
a)
The movement of electrons around an atomic nucleus
b)
The emission of high-energy particles or waves from atoms
c)
 A term that describes the forces that hold atomic nuclei together
d)
The application of heat energy to an atomic nucleus
2.
Which of the following best describes the process of nuclear fission? 
a)
Splitting an atom's nucleus apart 
b)
Separating an atom's electrons from its nucleus 
c)
Fusing two atomic nuclei together 
d)
Splitting an atom's electrons in half 
3.
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
4.
What is a half-life?
a)
The average time it takes for any element to disappear completely 
b)
The time it takes for a radioactive atom to lose half its neutrons
c)
The time it takes for half of any number of radioactive atoms to decay
d)
The time it takes for a radioactive atom to lose half its electrons 
5.
What happens when the number of protons in an atom changes? 
a)
The number of electrons changes too 
b)
Usually nothing happens, unless the atom is radioactive 
c)
The atomic nucleus explodes
d)
It becomes a completely different atom, with different properties 
6.
The time needed for half of a radioactive sample to decay is called its __________.
a)
decay period
b)
period
c)
transmutation time
d)
half-life
7.
How can radioactivity be useful?
a)
it can be used to microwave food
b)
It can be used in cancer treatments and pacemakers
c)
It can be used to create helpful gamma rays
d)
It can be used to create radioactive waste
8.
Fluorine has an atomic number of 9. What can you conclude about an atom of fluorine from this fact? 
a)
It has nine protons
b)
 It weighs nine grams
c)
It has nine electron shells
d)
It has a boiling point of 9 degrees Celsius
9.
In what part of an atom can protons be found? 
a)
Inside the electrons
b)
Inside the neutrons 
c)
Inside the atomic nucleus 
d)
 Inside the electron shells
10.
On the periodic table, how is atomic mass represented? 
a)
As an average of the mass of different isotopes
b)
As the exact mass of every atom
c)
As the mass of the most common isotope
d)
As the masses of all the protons added together
11.
What do carbon-12 and carbon-14 have in common? 
a)
They have the same number of protons
b)
They have the same number of neutrons
c)
 They have the same atomic mass
d)
They have the same atomic weight
12.
How is carbon-12 different from carbon-14?
a)
They have a different number of protons 
b)
They have a different number of electrons
c)
They have a different number of neutrons
d)
They are different elements 
13.
What can you conclude about carbon-14 from its name? 
a)
 It has 14 electrons
b)
 It has 14 neutrons
c)
It has 14 protons 
d)
 It has an atomic mass of 14
14.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
15.
The type of radioactive ray that will penetrate farthest into a material is a(n)__________. It is the most dangerous radioactive ray because of this.
a)
alpha
b)
beta
c)
gamma
d)
all of the above
16.
What type of radiation has a negligible mass and consists of high energy radiation?
a)
alpha
b)
beta
c)
gamma
d)
all of the above
17.
What does it mean when an element is radioactive?
a)
the atom emits radiation
b)
the nucleus is unstable due to an off balance ratio of protons to neutrons
c)
the nucleus changes to become stable
d)
all of the above
18.
How do atoms with stable nuclei differ from atoms with unstable nuclei? Nuclei is the plural of nucleus.
a)
The number of particles in stable nuclei never changes; the number of particles in unstable nuclei does change 
b)
Stable nuclei contain equal numbers of protons and neutrons; unstable nuclei do not 
c)
Stable nuclei emit electrons; unstable nuclei emit protons and neutrons 
d)
Stable nuclei can be found everywhere; unstable nuclei do not occur in nature
19.
How many neutrons does uranium-239 have
a)
92
b)
147
c)
239
d)
331
20.
This is an example of...
a)
Fission  reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Combustion
21.
Which type of radiation is being shown here
a)
Alpha 
b)
Beta
c)
Gamma
d)
None of the above
22.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
half-life
d)
gamma radiation
23.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
24.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
25.
This is an example of...
a)
Fission  reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Combustion
26.
Splitting a uranium atom is called - 
a)
fission
b)
fusion
27.
Energy is stored in the ___ of an atom.
a)
proton
b)
neutron
c)
electron cloud
d)
nucleus
28.
Uranium is found in 
a)
the sun
b)
hydrogen
c)
rocks in the ground
d)
xrays
29.
What happens to an isotope when its mass becomes too large and unstable? 
a)
It begins to emit radioactive energy, which can cause a fission reaction
b)
It begins to add protons in order to balance out the nucleus' mass
c)
It beings to emit only an electron because electrons are the largest subatomic particle 
d)
It begins to release compounds such as CO2
30.

1 atomic mass unit (a.m.u.) is a mass equal to _____ of the mass of carbon-12 atom

a)

1/12

b)

1/2

c)

1

d)

12

31.

calculate mass defect

a)

0.00622 a.m.u.

b)

0.0622 a.m.u.

c)

0.0226 a.m.u.

d)

0.00226 a.m.u.

32.

diagram shows a reactor nuclear. How control rod function in order to the rate nuclear raection?

a)

by absorbing excess heat

b)

by absorbing excess neutrons

c)

by slowing down the speed of neutron

d)

by releasing water

33.

Most power plants are built near the river or an abundant water source.

Why ?

a)

Water has the capability to absorb unwanted radiation.

b)

So that nuclear waste is easily dumped into the river

c)

Water is used to produce steam to run the turbine

d)

Uranium can be found in the most water source

34.

This is an example of

a)

Nuclear Fission

b)

Nuclear Fusion

c)

No reaction

35.
a)

A

b)

B

c)

C

d)

D

36.

a)

A

b)

B

c)

C

d)

D

37.

What particles are charge positively?

a)

Neutron

b)

Proton

c)

Electron

d)

Isotope

38.

What charge particle has no charge?

a)

neutron

b)

proton

c)

electron

d)

isotope

39.

True/False: The number of protons will always equal the number of electrons in an atom to make them electrically neutral.

a)

True

b)

False

40.

Nuclei with a different number of neutrons are called . . .

a)

Neutrinos

b)

Electrons

c)

Isotopes

d)

Nucleons

41.

Nuclear power is created by the process of . . .

a)

nuclear fusion

b)

nuclear fission

c)

atomic separation

d)

atom synopsis

42.

What element is used for nuclear energy / bombs?

a)

Einsteinium

b)

Radium

c)

Potassium

d)

Uranium

43.

The 2 bombs dropped to end World War II in the Pacific were on . . .

a)

Fukushima & Tokyo

b)

Nagasaki & Hiroshima

c)

Krakatoa & Fuji

d)

Tokyo and Mitsubishi

44.

What is the biggest problem with testing bombs?

a)

Nuclear clouds

b)

Weather change

c)

Radiation from nuclear fallout

d)

nuclear blast

45.

Nuclear power today uses the energy to . . .

a)

turn turbines by splitting atoms

b)

turn turbines by creating steam from the heat

c)

turn turbines by using temperature differences between fuel rods and water

d)

heating up electrons to move fast enough to create electricity

46.

Benefit of nuclear power includes . . .

a)

No air pollution

b)

endless energy created by fuel rods

c)

doesn't have risk of exploding

d)

substance to make it is highly available and not rare

47.

What is considered the worst nuclear disaster ever?

a)

Fukushima

b)

Three Mile Island

c)

Chernobyl

48.

What state is most nuclear waste kept in?

a)

California

b)

Utah

c)

New Mexico

d)

Nevada

49.

How much of US energy is produced by nuclear power?

a)

30%

b)

15%

c)

9%

d)

Less than 3%

50.

Food preservation - kills microorganisms

a)

True

b)

False

51.

Radioisotopes used to sterilise surgical equipment.

a)

False

b)

True

52.

Cleaning teeth

a)

True

b)

False

53.

Quality control in industry

a)

True

b)

False

54.

Radioisotopes used in detecting leaks in pipes.

a)

False

b)

True

55.

Radioisotopes used in medical scans

a)

False

b)

True

56.

Radioisotopes used in measuring the height of babies

a)

True

b)

False

57.

Radioisotopes used in prenatal scans

a)

False

b)

True

58.

Smoke detectors (smoke alarms)

a)

True

b)

False

59.

Radioisotopes are always safe.

a)

True

b)

False

60.

Uranium-238 is used as a nuclear fuel.

a)

True

b)

False

61.

It is acceptable to keep your lunch in a refrigerator labeled “Caution - Radioactive Material,” as long as your lunch is tightly sealed.

a)

True

b)

False

62.

Long term exposure to radioisotopes may cause cancer.

a)

True

b)

False

63.

Isotopes are atoms of the same element which have the same number of neutrons.

a)

False

b)

True

64.

Radiotherapy kills cancer cells.

a)

True

b)

False

65.
Two atoms of the same element but with different mass numbers are called________
a)
electrons
b)
isotopes
c)
ions
d)
reaction partners
66.

What do these isotopes of carbon all have in common?


126C, 136C, 146C

a)

they all have the same number of neutrons & mass number

b)

they all have the same atomic number and neutrons

c)

they all have the same atomic number and electrons

d)

they all have the same number of protons, atomic number, and mass number

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