Question 1

Nuclear stability is related to the balance between

Accepted Answer

A)  attracting and repelling forces in the nucleus.
B)  positive and negative ionic forces.
C)  both of these
D)  neither of these

Question 2

Human damage is usually highest for radiation by

Accepted Answer

A)  beta particles.
B)  alpha particles.
C)  either of the above
D)  none of the above

Question 3

Free protons and neutrons are spewed throughout the atmosphere by

Accepted Answer

A)  nitrogen decay.
B)  carbon decay.
C)  the bombardment of cosmic rays upon atoms.
D)  all of the above
E)  none of the above

Question 4

Carbon-14 is produced in the atmosphere principally by

Accepted Answer

A)  plants and animals.
B)  cosmic-ray bombardment.
C)  nitrogen bombardment.
D)  photosynthesis.
E)  none of the above

Question 5

Part of a wooden ancient ship is found to be 1/3 as radioactive as wood freshly cut from a tree. The age of the ship is likely about

Accepted Answer

A)  one-third of carbon-14's half-life.
B)  three times carbon-14's half-life.
C)  more than three times carbon-14's half-life.
D)  none of the above

Question 6

A quark is a fundamental particle

Accepted Answer

A)  that makes up a nucleon.
B)  much smaller than a nucleon.
C)  not composed of smaller parts.
D)  all of the above
E)  none of the above

Question 7

Once an alpha particle is outside the nucleus it is

Accepted Answer

A)  free to wander about the surrounding material.
B)  quickly bound to a neighboring nucleus.
C)  electrostatically repelled.
D)  radioactive. C

Question 8

There is a greater proportion of carbon-14 in

Accepted Answer

A)  new bones.
B)  old bones.
C)  same in each

Question 9

The radiation source closest to us originates in

Accepted Answer

A)  medical treatments.
B)  all kinds of power plants.
C)  our own bodies.
D)  none of the above

Question 10

The fate of the world's uranium supply is to eventually become

Accepted Answer

A)  alpha and beta particles.
B)  iron.
C)  lead.

Question 11

Cosmic rays originate in the

Accepted Answer

A)  Earth's interior.
B)  Earth's upper atmosphere.
C)  Sun.
D)  cosmos.
E)  none of the above

Question 12

For an isotope with a half-life of one day, at the end of two days the amount that remains is

Accepted Answer

A)  none.
B)  one-half.
C)  one-quarter.
D)  one-eighth.
E)  none of the above

Question 13

When uranium emits a beta particle, the result is

Accepted Answer

A)  a uranium ion.
B)  a different isotope of uranium.
C)  the first transuranic element.
D)  all of the above
E)  none of the above

Question 14

Generally speaking, the larger a nucleus is, the greater its

Accepted Answer

A)  stability.
B)  instability.
C)  neither stability nor instability

Question 15

Radiation dosage is commonly measured in

Accepted Answer

A)  rads.
B)  rems.
C)  joules.
D)  none of the above

Question 16

Which device is used primarily to detect nuclear radiation?

Accepted Answer

A)  synchrotron
B)  linear accelerator
C)  cyclotron
D)  scintillation counter
E)  none of the above

Question 17

Which is the strongest fundamental force?

Accepted Answer

A)  gravitational force.
B)  electric force.
C)  nuclear strong force.
D)  none of the above C

Question 18

Rays with the shortest wavelengths have the

Accepted Answer

A)  highest frequencies and energies.
B)  lowest frequencies and energies.
C)  lowest frequencies but highest energies. A

Question 19

Gamma rays are emitted by way of

Accepted Answer

A)  ionizing radiation.
B)  transitions within an atom's innermost electrons.
C)  transitions within the atomic nucleus.
D)  none of the above

Question 20

Which experiences the greatest electrical force in an electric field?

Accepted Answer

A)  alpha particle
B)  beta particle
C)  electron
D)  gamma ray
E)  all the same

Exam 33: Atomic Nucleus and Radioactivity

Nuclear stability is related to the balance between

Correct AnswerverifiedShow Answer

Human damage is usually highest for radiation by

Correct AnswerverifiedShow Answer

Free protons and neutrons are spewed throughout the atmosphere by

Correct AnswerverifiedShow Answer

Carbon-14 is produced in the atmosphere principally by

Correct AnswerverifiedShow Answer

Part of a wooden ancient ship is found to be 1/3 as radioactive as wood freshly cut from a tree. The age of the ship is likely about

Correct AnswerverifiedShow Answer

A quark is a fundamental particle

Correct AnswerverifiedShow Answer

Once an alpha particle is outside the nucleus it is

Correct AnswerverifiedC

There is a greater proportion of carbon-14 in

Correct AnswerverifiedShow Answer

The radiation source closest to us originates in

Correct AnswerverifiedShow Answer

The fate of the world's uranium supply is to eventually become

Correct AnswerverifiedShow Answer

Cosmic rays originate in the

Correct AnswerverifiedShow Answer

For an isotope with a half-life of one day, at the end of two days the amount that remains is

Correct AnswerverifiedShow Answer

When uranium emits a beta particle, the result is

Correct AnswerverifiedShow Answer

Generally speaking, the larger a nucleus is, the greater its

Correct AnswerverifiedShow Answer

Radiation dosage is commonly measured in

Correct AnswerverifiedShow Answer

Which device is used primarily to detect nuclear radiation?

Correct AnswerverifiedShow Answer

Which is the strongest fundamental force?

Correct AnswerverifiedC

Rays with the shortest wavelengths have the

Correct AnswerverifiedA

Gamma rays are emitted by way of

Correct AnswerverifiedShow Answer

Which experiences the greatest electrical force in an electric field?

Correct AnswerverifiedShow Answer

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C

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C

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A

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