Question 1

Why is radiation so harmful to living things?

Accepted Answer

A) creates free radicals which are highly reactive 
B) reactions occur causing genetic mutations 
C) turns the skin green 
D) More than one response is correct. 
A) creates free radicals which are highly reactive 
B) reactions occur causing genetic mutations 
C) turns the skin green 
D) More than one response is correct. D

Question 2

What is the nature of the reactions that occur in a star?

Accepted Answer

A) They are extremely fast chemical reactions 
B) They are fission reactions 
C) They are a mixture of chemical & nuclear reactions 
D) They are fusion reactions 
A) They are extremely fast chemical reactions 
B) They are fission reactions 
C) They are a mixture of chemical & nuclear reactions 
D) They are fusion reactions D

Question 3

Which of the following types of radiation is composed of particles which carry a negative charge?

Accepted Answer

A) alpha 
B) beta 
C) gamma 
D) positron 
A) alpha 
B) beta 
C) gamma 
D) positron B

Question 4

In nuclear reactions,the principle change occurs in the ______.

Accepted Answer

A) molecular bonds 
B) electron arrangement 
C) physical state of the matter 
D) nucleus of the atom 
A) molecular bonds 
B) electron arrangement 
C) physical state of the matter 
D) nucleus of the atom

Question 5

Which measure of radiation is used to account for health differences of various types of radiation?

Accepted Answer

A) curie 
B) rem 
C) gray 
D) rad 
A) curie 
B) rem 
C) gray 
D) rad

Question 6

Extensive use of an MRI should be avoided as it is a source of significant nuclear radiation exposure.

Accepted Answer

A) True 
 B)False

Question 7

The intensity of a radiation source was measured by a Geiger-Müller counter to be 236 counts per minute when the counter was place 124 ft from the source.What will be the intensity when the counter is 248 ft from the source?

Accepted Answer

A) 59.0 counts per minute 
B) 236 counts per minute 
C) 118 counts per minute 
D) 472 counts per minute 
A) 59.0 counts per minute 
B) 236 counts per minute 
C) 118 counts per minute 
D) 472 counts per minute

Question 8

A wooden box found in an Egyptian tomb could have its age determined using carbon-14.

Accepted Answer

A) True 
 B)False

Question 9

Free radicals are dangerous because

Accepted Answer

A) they are found incorporated in any radioisotope,including those that can enter the body through the lungs as does radon 
B) they can be taken into the body in the food eaten if that food has been grown in radioactive soil 
C) they are substances that are missing some electrons and are extremely active chemically 
D) All of these responses are correct. 
A) they are found incorporated in any radioisotope,including those that can enter the body through the lungs as does radon 
B) they can be taken into the body in the food eaten if that food has been grown in radioactive soil 
C) they are substances that are missing some electrons and are extremely active chemically 
D) All of these responses are correct.

Question 10

Nuclear power plants have control rods that absorb neutrons to control the reaction.What is the composition of the control rods?

Accepted Answer

A) steel 
B) concrete 
C) U-238 
D) carbon 
A) steel 
B) concrete 
C) U-238 
D) carbon

Question 11

The curie,becquerel and roentgen are all physical units of radiation.

Accepted Answer

A) True 
 B)False

Question 12

The number of neutrons in the nucleus of the isotope   is _____ .

Accepted Answer

A) 11 
B) 22 
C) 12 
D) 32 
A) 11 
B) 22 
C) 12 
D) 32

Question 13

Which of the following are made up of particles identical to electrons?

Accepted Answer

A) alpha rays 
B) beta rays 
C) gamma rays 
D) more than one response is correct 
A) alpha rays 
B) beta rays 
C) gamma rays 
D) more than one response is correct

Question 14

A patient undergoes external irradiation with Co-60 for treatment of cancer.Which of the following would you NOT expect to observe as a result of this type of treatment?

Accepted Answer

A) diarrhea 
B) hair loss 
C) bone marrow destruction 
D) altered blood chemistry 
A) diarrhea 
B) hair loss 
C) bone marrow destruction 
D) altered blood chemistry

Question 15

The reasons why I-131 is not suitable for use as a tracer are the same reasons why I-131 is an appropriate choice to treat thyroid cancer.

Accepted Answer

A) True 
 B)False

Question 16

The intensity of radiation is 100 units 15 feet from the source.The intensity would then be 300 units 5 feet from the source.

Accepted Answer

A) True 
 B)False

Question 17

The radioisotope radon-222 is a gas that is a health hazard because it can make its way into the house from the soil in which it is produced,be inhaled,and cause lung cancer.

Accepted Answer

A) True 
 B)False

Question 18

Carbon-14 is only effective in dating an object up to approximately 10 half-lives.The reason is that the speed with which C-14 decays increases after 10 half-lives.

Accepted Answer

A) True 
 B)False

Question 19

The gray is one of several units used in association with the biological impact of radiation exposure.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not attracted or repelled by electrical charges?

Accepted Answer

A) alpha rays 
B) beta rays 
C) gamma rays 
D) More than one response is correct. 
A) alpha rays 
B) beta rays 
C) gamma rays 
D) More than one response is correct.

Exam 10: Radioactivity and Nuclear Processes

Why is radiation so harmful to living things?

What is the nature of the reactions that occur in a star?

Which of the following types of radiation is composed of particles which carry a negative charge?

In nuclear reactions,the principle change occurs in the ______.

Which measure of radiation is used to account for health differences of various types of radiation?

Extensive use of an MRI should be avoided as it is a source of significant nuclear radiation exposure.

The intensity of a radiation source was measured by a Geiger-Müller counter to be 236 counts per minute when the counter was place 124 ft from the source.What will be the intensity when the counter is 248 ft from the source?

A wooden box found in an Egyptian tomb could have its age determined using carbon-14.

Free radicals are dangerous because

Nuclear power plants have control rods that absorb neutrons to control the reaction.What is the composition of the control rods?

The curie,becquerel and roentgen are all physical units of radiation.

The number of neutrons in the nucleus of the isotope is _____ .

Which of the following are made up of particles identical to electrons?

A patient undergoes external irradiation with Co-60 for treatment of cancer.Which of the following would you NOT expect to observe as a result of this type of treatment?

The reasons why I-131 is not suitable for use as a tracer are the same reasons why I-131 is an appropriate choice to treat thyroid cancer.

The intensity of radiation is 100 units 15 feet from the source.The intensity would then be 300 units 5 feet from the source.

The radioisotope radon-222 is a gas that is a health hazard because it can make its way into the house from the soil in which it is produced,be inhaled,and cause lung cancer.

Carbon-14 is only effective in dating an object up to approximately 10 half-lives.The reason is that the speed with which C-14 decays increases after 10 half-lives.

The gray is one of several units used in association with the biological impact of radiation exposure.

Which of the following is not attracted or repelled by electrical charges?

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, bases, and Salts

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters