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WorksheetsRADIOACTIVITY
Total questions: 19
Worksheet time: 19mins
Name
Class
Date
1.
What is emitted during Beta Radiation?
a)
A high-energy Electron.
b)
Protons.
c)
Neutrons.
d)
Nuclei
2.
What is emitted during Alpha Radiation?
a)
A helium nuclei.
b)
A helium atom
c)
Gamma Rays.
d)
Positrons
3.
What is radioactive decay?
a)
The spontaneous breakdown of an atomic nucleus resulting in only energy release
b)
The spontaneous breakdown of an atomic nucleus resulting in only matter release
c)
The spontaneous breakdown of an atomic nucleus resulting in a release of energy and matter
d)
The decay of the use of radios and the increased use of televisions.
4.
Which is not true of radioactive decay?
a)
It is a result of instability in atoms
b)
It happens only in nuclear power plants
c)
Radioactivity can be useful
d)
It is hazardous to human health
5.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma
d)
none
6.
In which of the following systems will the radius of the first orbit of the electron be smallest?
a)
hydrogen
b)
singly ionized helium
c)
deuteron
d)
tritium
7.
The radius of the 4th orbit of the electron will be smaller than its 8th orbit by a factor of
a)
2
b)
4
c)
8
d)
16
8.
In the spectrum of hydrogen atom which transition will yield longest wavelength?
a)
n = 2 to n = 1
b)
n = 5 to n = 4
c)
n = 7 to n = 6
d)
n = 8 to n = 7
9.
If the number of nuclei in a radioactive sample at a given time is N, what will be the number at the end of two half-lives?
a)
N/2
b)
N/4
c)
3N/4
d)
N/8
10.
The composition of an α particle can be expressed as
a)
1p+1n
b)
1p+2n
c)
2p+1n
d)
2p+2n
11.
What is emitted during Beta Radiation?
a)
A high-energy Electron.
b)
Protons.
c)
Neutrons.
d)
Nuclei
12.
What is emitted during Alpha Radiation?
a)
A helium nuclei.
b)
A helium atom
c)
Gamma Rays.
d)
Positrons
13.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
half-life
d)
gamma radiation
14.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
15.
Complete the nuclear equation and determine the type of decay that is occurring in this reaction.
a)
alpha
b)
beta
c)
gamma
d)
none
16.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
17.
Which atoms combine together during fusion reaction on the sun?
a)
Helium and Hydrogen atoms
b)
Hydrogen atoms
c)
Hydrogen and Lithium atoms
d)
Hydrogen and Carbon atoms
18.
In order of most to least penetrating radiation we have
a)
Alpha , Beta, Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
19.
Very high temperature and pressure is required for:
a)
Fission
b)
Fusion
c)
Radioactive Decay
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