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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
36 point 9 years
B
32 point 3 years
C
18 point 5 years
D
12 point 3 years
2
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What occurs as energy is transferred through the radiative zone of the Sun? Choose two correct answers.

A
Energy is released into the photosphere.
B
Energy is transferred through the large-scale movement of material.
C
Gamma rays are produced.
D
Photons are scattered in many directions.
E
Photons are absorbed and reemitted.
4

What error did Mimi make?

A
A proton is released in beta plus decay.
B
The changes to the nucleus are reversed.
C
The changes to atomic number are reversed.
D
No change in mass number occurs in beta minus decay.
5

What is the best placement of the labels?

A
Label 1 in region W. Label 2 in region Y. Label 3 in region Z.
B
Label 1 in region V. Label 2 in region Z. Label 3 in region Y.
C
Label 1 in region V. Label 2 in region X. Label 3 in region Z.
D
Label 1 in region W. Label 2 in region X. Label 3 in region Y.
6

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

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