AnswersPhysics in the UniverseNuclear Processes

Practice Test Answers

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1
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What error did Mimi make?

A
The changes to atomic number are reversed.
B
The changes to the nucleus are reversed.
C
A proton is released in beta plus decay.
D
No change in mass number occurs in beta minus decay.
2
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What is the best placement of the labels?

A
Label 1 in region V. Label 2 in region X. Label 3 in region Z.
B
Label 1 in region W. Label 2 in region Y. Label 3 in region Z.
C
Label 1 in region V. Label 2 in region Z. Label 3 in region Y.
D
Label 1 in region W. Label 2 in region X. Label 3 in region Y.
3

Which applications, either for diagnostic purposes or for therapeutic purposes, involve the use of X-rays? Choose four correct answers.

A
external beam radiation therapy
B
radioisotope imaging
C
fluoroscopy
D
MRI
E
laser eye surgery
F
radiography
G
CT scan
H
brachytherapy
4

What occurs as energy is transferred through the radiative zone of the Sun? Choose two correct answers.

A
Photons are absorbed and reemitted.
B
Photons are scattered in many directions.
C
Energy is transferred through the large-scale movement of material.
D
Energy is released into the photosphere.
E
Gamma rays are produced.
6

How can scientists determine the age of a fossil in a sedimentary rock layer sandwiched between two layers of volcanic rock? Choose the correct answer from each drop-down menu to complete the statements.

Answer:

radiometric|half-life|younger|older

7

Which are most likely to be used during a routine visit to the dentist?

A
radiopharmaceuticals and X-rays
B
lasers and tracers
C
ultrasound and radiopharmaceuticals
D
ultrasound and X-rays
9

Seven-eighths of a sample of hydrogen-3 will have become a stable isotope after 36 point 9 years. What is the half-life of hydrogen-3?

A
32 point 3 years
B
18 point 5 years
C
36 point 9 years
D
12 point 3 years
10

Which labels belong in the regions marked X, Y, and Z?

A
X: Smaller nuclei form Y: Thermal energy is produced Z: A larger nucleus forms
B
X: Large amounts of energy are released Y: One or more neutrons is released Z: Smaller nuclei form
C
X: One or more neutrons is released Y: A larger nucleus forms Z: Large amounts of energy are released
D
X: A larger nucleus forms Y: Large amounts of energy are released Z: Smaller nuclei form

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