101 Basic Physics Concepts Quiz!
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- 1.What is a beta particle made of?
- A.
One proton
- B.
One electron
- C.
Helium particle
- D.
One proton and one neutron
- 2.Photons interact with matter by three primary means:
- A.
Photoelectric Effect
- B.
Compton scattering
- C.
Pair Production
- D.
All as above
- 3.Radioactive materials have unstable:
- A.
Nuclei
- B.
Electron
- C.
Proton
- D.
Neutron
- 4.The rate at which radioactive isotope changes to a more stable atom is know as the:
- A.
Isotope decay rate
- B.
Half-life
- C.
Activity
- D.
Attenuation
- 5.Which of these is the correct definition of half-life?
- A.
The time it takes for the number of protons to halve
- B.
The distance it takes for the number of nuclei to halve
- C.
The time it takes for the number of nuclei to halve
- D.
None of the above
- 6.What does alpha radiation consist of?
- A.
One electron
- B.
Two protons and two neutrons
- C.
Electromagnetic radiation
- D.
Two protons and 2 electrons
- 7.Which type of radiation is the least penetrating?
- A.
Alpha
- B.
Beta
- C.
Gamma
- D.
X-ray
- 8.What shape is the line on a decay curve for a radioactive substance?
- A.
Straight line upwards
- B.
Curve upwards
- C.
Curve downwards
- D.
Logarithmic
- 9.What are the two main nuclear fuels?
- A.
Plutonium and mendelevium
- B.
Uranium and curium
- C.
Uranium and strontium
- D.
Uranium and plutonium
- 10.Which type of radioactive decay produces light, fast-moving particles?
- A.
Alpha
- B.
Beta
- C.
Gamma
- D.
None of the above
- 11.Gamma-ray photons have:
- A.
No mass and no electric charge
- B.
No mass and an electric charge of +1
- C.
No mass and an electric charge of +2
- D.
No mass and an electric charge of -1
- 12.Electron Capture involves:
- A.
An electron combining with a neutron
- B.
A neutron being ejected from the nucleus
- C.
An electron being ejected from the nucleus
- D.
An electron combining with a proton
- 13.In Alpha Decay:
- A.
Z and A are unchanged
- B.
Z decreases by 4 and A decreases by 2
- C.
Z decreases by 2 and A decreases by 4
- D.
Z decreases by 4 and A decreases by 4
- 14.Isomeric Transition involves:
- A.
K-capture
- B.
The conversion of a proton to a neutron
- C.
The conversion of a neutron to a proton
- D.
The emission of a gamma-ray
- 15.In Positron Emission:
- A.
Z increases by 1 and A remains the same
- B.
Z decreases by 1 and A remains the same
- C.
Z remains the same and A decreases by 1
- D.
Z remains the same and A increases by 1
- 16.Electron Emission involves the ejection of:
- A.
A beta-minus particle
- B.
An alpha-particle
- C.
A beta-plus particle
- D.
A proton and two neutrons
- 17.Carbon-11 is a radioactive isotope of carbon. Its half-life is 20 minutes. What fraction of the initial number of C-11 atoms in a sample will have decayed away after 80 minutes?
- A.
1/16
- B.
1/8
- C.
1/4
- D.
1/2
- 18.Mass Number is defined as:
- A.
The number of protons in a nucleus
- B.
The complement of the Atomic Number
- C.
The number of neutrons in a nucleus
- D.
The number of protons plus the number of neutrons in a nucleus
- 19.Atomic Number is defined as:
- A.
The inverse of the Mass Number
- B.
The number of protons plus the number of neutrons in a nucleus
- C.
The number of protons in a nucleus
- D.
The number of neutrons in a nucleus
- 20.Nuclear binding energies are usually expressed in units of:
- A.
KeV
- B.
MeV
- C.
Joules
- D.
EV
- 21.The Hydrogen-3 nucleus (also called Tritium) consists of:
- A.
Two neutrons and one proton
- B.
Two protons and one neutron
- C.
Two neutrons and two protons
- D.
Two neutrons and no protons
- 22.Radioactivity is the process of:
- A.
A stable nucleus becoming unstable
- B.
An electron moving to a lower energy shell
- C.
An unstable nucleus becoming stable
- D.
An electron moving to a higher energy shell
- 23.In the symbol Cs-137, the number 137 represents:
- A.
Avogadro's number
- B.
The mass number
- C.
The number of electrons
- D.
The atomic number
- 24.1 MBq is equal to:
- A.
1 billion decays per second
- B.
37 thousand, million curies
- C.
1 decay per second
- D.
1 million decays per second
- 25.The Half Life of 99m-Tc is 6 hours. After how much time will one-eighth of the radioactivity in a sample remain?
- A.
6 hours
- B.
12 hours
- C.
18 hours
- D.
24 hours
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