AnswersTX-Integrated Physics and Chemistry B-CRUnit Test

Unit Test — Unit test Answers

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A patient comes into the hospital because she is worried about possible exposure to radiation. The doctors determine that the patient has 60 rem of exposure. What is her risk of cancer?

A
High because her exposure is less than 100 rem.
B
Low because her exposure is less than 100 rem.
C
High because her exposure is greater than 50 rem.
D
Low because her exposure is greater than 50 rem.
2
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Which type of radiation travels at the speed of light and penetrates matter easily?

A
beta particles
B
radionuclides
C
alpha particles
D
gamma rays
3

Which is a biological effect of low exposure to radiation?

A
DNA damage
B
cell, tissue, and organ death
C
death of the organism
D
acute radiation syndrome
4

Which type of radiation is the smallest in size?

A
alpha radiation
B
beta radiation
C
gamma radiation
D
positron radiation
5

Which career is most concerned with the study of radioactive isotopes?

A
biochemist
B
nuclear chemist
C
organic chemist
D
nuclear engineer
6

What form does the radiation that is used to treat cancer take?

A
alpha particles
B
photons
C
beta particles
D
neutrons
7

Which household item uses radiation in a beneficial way?

A
conventional ovens
B
smoke detectors
C
electric air filters
D
computers and TV sets
8

Which radiation has the same ability to transfer energy to the body as an electron?

A
a neutron
B
a proton
C
an alpha particle
D
a photon
9

Which type of radiation is blocked by the skin but is the most dangerous once it is inside the body?

A
beta particles
B
radionuclides
C
alpha particles
D
gamma particles
10

What is the difference between the units rem and rad?

A
Rem is a conventional unit, and rad is an SI unit.
B
Rem is an SI unit, and rad is a conventional unit.
C
Rem is used to measure biological risk, and rad is used to measure absorbed radiation.
D
Rem is used to measure absorbed radiation, and rad is used to measure biological risk.

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