Question 1

1. In the United States, research has documented socioeconomic and racial/ethnic disparities in residential exposures to _______________.

[removed]		air pollution
[removed]		hazardous waste sites
[removed]		industrial facilities
[removed]		all of the above

1 points

Question 2

1. In the context of ionizing radiation, the term relative biological effectiveness describes _______________, per unit of radiation energy absorbed by the body.

[removed]		the relative damage caused by different types of ionizing radiation
[removed]		the relative impact of acute versus chronic exposure to ionizing radiation
[removed]		the relative risk of birth defects caused by exposure early versus late in pregnancy

1 points

Question 3

1. Which of the following occupations is not particularly associated with high exposure to asbestos?

[removed]		Insulation Workers
[removed]		Oil Workers
[removed]		Shipbuilding Workers

1 points

Question 4

1. Which of the following diseases is a sentinel illness for asbestos exposure?

[removed]		Fibrosis
[removed]		Lung cancer
[removed]		Mesothelioma

1 points

Question 5

1. The half-life of a radioactive element is the time it takes for half the atoms in a sample to _______________.

[removed]		become non-radioactive
[removed]		lose an electron
[removed]		undergo radioactive decay

1 points

Question 6

1. Which of the following is not a syndrome associated with acute high-level exposure to ionizing radiation?

[removed]		Bone marrow syndrome
[removed]		Central nervous system syndrome
[removed]		Gastrointestinal syndrome
[removed]		Respiratory syndrome

1 points

Question 7

1. Occupational exposure to cotton dust causes _______________.

[removed]		byssinosis
[removed]		lacrimosis
[removed]		tinnitus

1 points

Question 8

1. Which of the following types of radiation is not ionizing?

[removed]		Beta radiation
[removed]		Gamma radiation
[removed]		Infrared radiation

1 points

Question 9

1. Which type of radiation is most penetrating, if a person is exposed from a source outside the body?

[removed]		Alpha radiation
[removed]		Beta radiation
[removed]		Gamma radiation

1 points

Question 10

1. Nanoparticles are in the same size range as __________________ particulates.

[removed]		fine
[removed]		respirable
[removed]		ultrafine

1 points

Question 11

1. Asbestos is a _______________ hazard.

[removed]		biological
[removed]		chemical
[removed]		physical

1 points

Question 12

1. Which of the following is not a documented health effect of noise in the workplace?

[removed]		Cognitive failures
[removed]		Coronary heart disease
[removed]		Decrease in immune system function

1 points

Question 13

1. Today, with asbestos exposures in the United States largely controlled, deaths from malignant melanoma in the country are _______________.

[removed]		declining
[removed]		holding steady
[removed]		rising

1 points

Question 14

1. Radioactive decay occurs when an atom of a radioactive isotope _______________.

[removed]		Absorbs a burst of energy
[removed]		Ejects part of its nucleus
[removed]		undergoes fusion of the particles in its nucleus

1 points

Question 15

1. In the United States, research on burdens of BPA, PFCs, and PBDEs in people’s bodies or in their microenvironments has shown:

[removed]		consistently higher burdens in lower-socioeconomic-status and/or minority populations.
[removed]		consistently lower burdens in lower-socioeconomic-status and/or minority populations.
[removed]		variation in demographic patterns in body burdens.