Question 1

The high temperature of Earth's interior is mainly due to

Accepted Answer

A)  great internal pressure.
B)  friction, as plates move past one another.
C)  the Earth's natural heat.
D)  radioactive processes.

Question 2

The sources of both X-rays and gamma rays are

Accepted Answer

A)  electron clouds.
B)  the atomic nucleus.
C)  both of these
D)  neither of these

Question 3

Alpha particles and beta particles are deflected by a magnetic field in

Accepted Answer

A)  opposite directions.
B)  perpendicular directions to each other.
C)  the same direction.

Question 4

In a smoke detector americium (A = 95) transmutes to neptunium (A = 93) by

Accepted Answer

A)  beta emission.
B)  alpha emission.
C)  gamma emission.
D)  none of the above

Question 5

A nucleon is either a

Accepted Answer

A)  positron or an electron.
B)  proton or an electron.
C)  neutron or an electron.
D)  proton or a neutron.

Question 6

A device that shows the bending of particle trails in liquid hydrogen is a

Accepted Answer

A)  streamer chamber.
B)  spark chamber.
C)  bubble chamber.
D)  all of the above
E)  none of the above

Question 7

Radiation dosages based on potential damage is in

Accepted Answer

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

Question 8

When the nucleus of an atom emits a beta particle, the atom's atomic number

Accepted Answer

A)  decreases.
B)  remains unchanged.
C)  increases.

Question 9

All deposits of natural uranium contain appreciable amounts of

Accepted Answer

A)  iron.
B)  lead.
C)  gold.
D)  all of the above
E)  none of the above

Question 10

When thorium (A = 90) emits a beta particle, the resulting nucleus has atomic number

Accepted Answer

A)  88.
B)  89.
C)  90.
D)  92.
E)  none of the above

Question 11

In order for an atom to decay to an element that is one greater in atomic number, it can emit

Accepted Answer

A)  one alpha particle and 3 beta particles.
B)  one positron and 2 beta particles.
C)  one beta particle.
D)  all of the above
E)  none of the above

Question 12

Which is heated in its interior by nuclear processes?

Accepted Answer

A)  Sun
B)  Earth
C)  both of these
D)  neither of these

Question 13

In 1919 Rutherford performed the first historic artificial transmutations of

Accepted Answer

A)  hydrogen to helium.
B)  nitrogen to oxygen.
C)  carbon 12 to carbon 14.
D)  none of the above

Question 14

Carbon dating requires that the object being tested contain

Accepted Answer

A)  organic material.
B)  inorganic material.
C)  charcoal.
D)  none of the above

Question 15

When U-239 emits a beta particle, the resulting nucleus has

Accepted Answer

A)  90 protons.
B)  91 protons.
C)  92 protons.
D)  93 protons.
E)  94 protons.

Question 16

The half-life of a radioactive substance is affected by

Accepted Answer

A)  pressure.
B)  temperature.
C)  age.
D)  all of the above
E)  none of the above

Question 17

Radium (A = 88) transmutes to radon (A = 86) by

Accepted Answer

A)  beta emission.
B)  alpha emission.
C)  gamma emission.
D)  none of the above

Question 18

The sources of X-rays are

Accepted Answer

A)  electron clouds.
B)  the atomic nucleus.
C)  both of these
D)  neither of these

Question 19

Which wavelengths are shortest?

Accepted Answer

A)  light ray
B)  X-ray
C)  gamma ray

Question 20

Which will NOT bend when moving in a magnetic field?

Accepted Answer

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

Exam 33: Atomic Nucleus and Radioactivity

The sources of X-rays are

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When U-239 emits a beta particle, the resulting nucleus has

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In 1919 Rutherford performed the first historic artificial transmutations of

Correct AnswerverifiedShow Answer

Alpha particles and beta particles are deflected by a magnetic field in

Correct AnswerverifiedShow Answer

In a smoke detector americium (A = 95) transmutes to neptunium (A = 93) by

Correct AnswerverifiedShow Answer

All deposits of natural uranium contain appreciable amounts of

Correct AnswerverifiedShow Answer

When the nucleus of an atom emits a beta particle, the atom's atomic number

Correct AnswerverifiedShow Answer

Which wavelengths are shortest?

Correct AnswerverifiedShow Answer

A nucleon is either a

Correct AnswerverifiedShow Answer

In order for an atom to decay to an element that is one greater in atomic number, it can emit

Correct AnswerverifiedShow Answer

Radium (A = 88) transmutes to radon (A = 86) by

Correct AnswerverifiedShow Answer

Carbon dating requires that the object being tested contain

Correct AnswerverifiedShow Answer

The half-life of a radioactive substance is affected by

Correct AnswerverifiedShow Answer

Which is heated in its interior by nuclear processes?

Correct AnswerverifiedShow Answer

A device that shows the bending of particle trails in liquid hydrogen is a

Correct AnswerverifiedShow Answer

Which will NOT bend when moving in a magnetic field?

Correct AnswerverifiedShow Answer

When thorium (A = 90) emits a beta particle, the resulting nucleus has atomic number

Correct AnswerverifiedShow Answer

Radiation dosages based on potential damage is in

Correct AnswerverifiedShow Answer

The high temperature of Earth's interior is mainly due to

Correct AnswerverifiedShow Answer

The sources of both X-rays and gamma rays are

Correct AnswerverifiedShow Answer

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