Question 1

In bubble chambers,charged particles move in spirals because

Accepted Answer

A)  the magnetic field decreases.
B)  the electric charge decreases.
C)  the electric charge increases.
D)  of perspective and parallax.
E)  of energy dissipation.F) C) and E)
G) A) and C)

Question 2

Which radiation has no electric charge associated with it?

Accepted Answer

A)  alpha rays
B)  beta rays
C)  gamma rays
D)  all of these
E)  none of theseF) A) and B)
G) A) and D)

Question 3

When radium (A = 88) emits an alpha particle,the resulting nucleus has atomic number

Accepted Answer

A)  86.
B)  88.
C)  90.
D)  92.
E)  none of theseF) All of the above
G) A) and B)

Question 4

The high temperature of the Earth's interior is due mostly to

Accepted Answer

A)  great internal pressure.
B)  friction,as plates move past one another.
C)  the Earth's natural heat.
D)  radioactivity.E) None of the above
F) All of the above

Question 5

When a gamma ray is emitted by a nucleus,the nucleus then has appreciably less

Accepted Answer

A)  mass.
B)  charge.
C)  both of these
D)  neither of theseE) A) and D)
F) None of the above

Question 6

A gram of radioactive material has a half-life of one year.After 4 years,how much radioactive material will be left?

Accepted Answer

A)  0 g
B)  1/2 g
C)  1/4 g
D)  1/8 g
E)  none of theseF) A) and D)
G) C) and E)

Question 7

All deposits of natural uranium contain appreciable amounts of

Accepted Answer

A)  iron.
B)  lead.
C)  gold.
D)  all of these
E)  none of these particularlyF) B) and C)
G) A) and C)

Question 8

The half-lives of elements beyond uranium are too short for these elements to occur in natural deposits.But elements below uranium that have equally short half-lives do occur in natural deposits.This is because they are

Accepted Answer

A)  the small leftover of huge abundances when the Earth formed.
B)  subdued and preserved by pressures beneath the Earth.
C)  bound with longer-living elements.
D)  the products of uranium decay.E) A) and B)
F) C) and D)

Exam 33: Atomic Nucleus and Radioactivity

In bubble chambers,charged particles move in spirals because

Correct Answer
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When radium (A = 88) emits an alpha particle,the resulting nucleus has atomic number

Correct Answer
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The half-lives of elements beyond uranium are too short for these elements to occur in natural deposits.But elements below uranium that have equally short half-lives do occur in natural deposits.This is because they are

Correct Answer
verified

Which radiation has no electric charge associated with it?

Correct Answer
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A gram of radioactive material has a half-life of one year.After 4 years,how much radioactive material will be left?

Correct Answer
verified

The high temperature of the Earth's interior is due mostly to

Correct Answer
verified

All deposits of natural uranium contain appreciable amounts of

Correct Answer
verified

When a gamma ray is emitted by a nucleus,the nucleus then has appreciably less

Correct Answer
verified

Exam 33: Atomic Nucleus and Radioactivity

In bubble chambers,charged particles move in spirals because

Correct AnswerverifiedShow Answer

When radium (A = 88) emits an alpha particle,the resulting nucleus has atomic number

Correct AnswerverifiedShow Answer

The half-lives of elements beyond uranium are too short for these elements to occur in natural deposits.But elements below uranium that have equally short half-lives do occur in natural deposits.This is because they are

Correct AnswerverifiedShow Answer

Which radiation has no electric charge associated with it?

Correct AnswerverifiedShow Answer

A gram of radioactive material has a half-life of one year.After 4 years,how much radioactive material will be left?

Correct AnswerverifiedShow Answer

The high temperature of the Earth's interior is due mostly to

Correct AnswerverifiedShow Answer

All deposits of natural uranium contain appreciable amounts of

Correct AnswerverifiedShow Answer

When a gamma ray is emitted by a nucleus,the nucleus then has appreciably less

Correct AnswerverifiedShow Answer

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