ENVSE 450 Exam 2

For fetuses, infants, and children, the hazards of heavy metals include:

a. Impairment of physical and mental development b. Damage to internal organs c. Brain damage d. Some forms of cancer **e. All of the above

To which pesticide group does Pyrethrin belong?

a. Organochlorine **b. Naturally occuring substance c. Organophosphate d. Carbamate e. None of the above

Substances on the CERCLA Priority List of Hazardous Substances have the following characteristics

a. They have known or suspected toxicity b. They have potential for human exposure at National Priority List (NPL) sites c. They have the lowest LD50 d. They are Group A1 carcinogens **e. a and b

Which neurotransmitter is involved in the mechanism of toxicity for organophosphate pesticides

acetylcholine

What is aluminum used in? (hygiene, stomach problems)

antiperspirants, pepto-bismols

Organophosphate are also known as:

cholinesterase inhibitors

Example of ELF (extremely low frequency) radiation

high tension power lines

What characteristics do CERCLA priority list of hazardous substances have? (2)

1) known or suspected toxicity 2) exposure risk

What is gold used to treat?

Arthritis

What type of reactors were involved in the Fukushima disaster?

Boiling water reactor

Which of the following is not a VOC?

iron oxide

Which of the following pesticides is derived from compounds in chrysanthemums?

Pyrethrins

Examples of solvents

TCE, PCE, Toluene, Benzene

The unit of exposure for x or gamma rays

roentegen

The category of biopesticides includes which of the following?

**a.Canola Oil b. Diazanon c. Paraquat d. Methyl Isocyanate e. DDT

The approximate dividing line between ionizing and non-ionizing radiation:

10 eV

A heavy metal has a specific gravity that is how many more times greater than waters specific gravity?

5 or more times higher

The occupational exposure limit for ionizing radiation is:

5 rem annually

Possible methods for exposure to metals include:

A) Inhalation of dusts B) Inhalation of metal fumes C) Skin contact with dusts D) Ingestion **E) All of the above

Which agency prepares the CERCLE Priority List of Hazardous Substances?

ATSDR

What does ATSDR stand for?

Agency for Toxic Substances and Disease Registry

The primary health effect(s) of concern for typical ionizing radiation exposures in the general public are:

Cancer and DNA damage

The symptoms of long-term exposure to lower levels of toxic metals include:

Chronic illness effects

According to the ACGIH classification system a designation of "A1" means:

Confirmed Human Carcinogen

What chromium is an essential nutrient?

Cr(III)

Which of the following forms of Chromium is classified as a carcinogen?

Cr(VI)

Which of the following pesticides has been used extensively to combat malaria around the world?

DDT

Which substance is suspected to have played a role in the human toxicity of Agent Orange?

Dioxin

Engineers may issue subjective and partial statements if such statements are in writing and consistent with the best interests of their employers, clients, or the public. (T or F)

False

Engineers may not be required to follow the provisions of state or federal law when such actions could endanger or compromise their employer or their clients' interests. (T or F)

False

Engineers may perform services outside of their areas of competence as long as they inform their employers or clients

False

Engineers shall not be required to engage in truthful acts when required to protect the public health, safety, and welfare. (T or F)

False

Agent Orange is an example of a (an):

Herbicide

Which type of non-ionizing radiation is most closely associated with heat lamps?

Infrared radiation

What is lithium used to treat?

Mania and bipolar

Bioaccumulation (biomaginfication) of heavy metals is a particular hazard associated with:

Mercury

Minimata disease was associated with ingestion of seafoods tainted with:

Mercury

Is iron oxide a VOC? (yes or no)

NO

The list of the most serious uncontrolled or abandoned hazardous waste sites in the United States for long term remediation under Superfund:

National Priority List (NPL)

Which of the following toxic metals is NOT among the top twenty compounds on the CERCLA priority list of hazardous substances?

Nickel

Three mile island, fukushima, and chernobyl are all examples of

Nuclear accidents

Which pesticide group does DDT belong to?

Organochlorine

Which of the following pesticides has relatively low human toxicity and relatively high environmental persistence?

Organochlorines

Carbamates are close relatives to what type of pesticide?

Organophosphate

To which pesticide group does Malathion belong?

Organophosphate

This category of insecticides is also known as cholinesterase inhibitors

Organophosphates

Which of the following pesticides has relatively high acute human toxicity and relatively low environmental persistence?

Organophosphates

What exposure is associated with lung cancer?

Radon

What source of radiation accounts for the largest annual effective dose in adults?

Radon

An EPA benchmark derived from the NOAEL through application of uncertainty and modifying factors

Reference Dose (RfD)

A unit of measure used to describe the amount of radioactivity in a sample of material is:

The curie or becquerel

An action may be legal but still violate professional or ethical codes (T or F)

True

Engineers shall act for each employer or client as faithful agents or trustees.

True

Engineers shall not reveal facts, data, or information without the prior consent of the client or employer except as authorized or required by law or this Code. (T or F)

True

Engineers shall undertake assignments only when qualified by education or experience in the specific technical fields involved. (T or F)

True

Engineers, in the fulfillment of their professional duties hold paramount the safety, health, and welfare of the public. (T or F)

True

If engineers' judgement is overruled under circumstances that endanger life or property, they shall notify their employers or clients and such other authority as may be appropriate. (T or F)

True

Which type of non-ionizing radiation also has a portion of its spectrum in the ionizing range?

Ultraviolet

Which group has the highest incidence and mortality for melanoma of the skin?

White