Deck 18: Hazards of Temperature Extremes and Chemical Burns

Question 1

Wind chill factor is the cooling effect produced by a combination of temperature, wind, velocity, and/or air movement.

Answer 1

True

Question 2

Core body temperature that is greater than 37.5°C is a sign of heat strain.

Answer 2

False

Question 3

A mild or moderate heat stress may cause discomfort and may adversely affect performance and safety, but it is not harmful to health.

Answer 3

True

Question 4

Some of the benefits of acclimatization can be lost in as little as two or three days.

Question 5

Heat stress is net heat load to which a worker is exposed.

Question 6

Humidex levels between 30°C to 39°C are generally considered dangerous.

Question 7

A third-degree burn results in what level of damage?

A) Results in mild inflammation of the skin
B) Results in blisters forming on the skin
C) Penetrates through the dermis and epidermis
D) Is a minor burn
E) Dermatitis

Question 8

What is the maximum temperature in which an acclimatized worker may perform heavy work safely?

A) 24.5 degrees Celsius
B) 26 degrees Celsius
C) 27.5 degrees Celsius
D) 28.5 degrees Celsius
E) 30.0 degrees Celsius

Question 9

Moisture in the air on a hot summer day helps us feel cooler.

Question 10

What term is used to describe the transfer of heat from one location to another by way of a moving medium?

A) Conduction
B) Convection
C) Radiation
D) Metabolic heat
E) Environmental heat

Question 11

ACGIH recommends the same work/rest schedule for acclimatized and non-acclimatized workers.

Question 12

Convection is the transfer of heat between two bodies that are touching or from one location to another within a body.

Question 13

Critical burns are second-degree burns covering what percent of BSA (Body Surface Area)?

A) 5%
B) 10%
C) 15%
D) 20%
E) 30%

Question 14

What is the most important factor affecting the severity of a burn?

A) Age of victim
B) Location of burn
C) Amount of burned area
D) Depth to which burn penetrates
E) The source of heat

Question 15

The wet bulb globe temperature is a measure of the heat stress in direct sunlight, which takes into account temperature, humidity, wind speed, and solar heat load.

Question 16

The skin serves several important purposes including the following: protection of body tissue, sensation, excretion, and respiration.

Question 17

Temperature, humidity, air distribution, personal preference, and acclimatization are all determinants of comfort in the workplace.

Question 18

First-degree burns are classified as critical burns.

Question 19

Hypothermia is the condition that results when the body's core temperature drops below 35°C (95°F).

Question 20

Third-degree burns are minor and result only in a mild inflammation of the skin, known as erythema.

Question 21

What percentage of body surface (BSA) area is represented by one leg and one arm?

A) 18% of BSA
B) 27% of BSA
C) 36% of BSA
D) 45% of BSA
E) 50% of BSA

Question 22

With an actual temperature of -7°C, the cooling effect of a 24 km/h wind would result in what equivalent temperature?

A) -7°C
B) -9°C
C) -20°C
D) -26°C
E) -29°C

Question 23

What would be comfortable humidex level?

A) Humidex level below 29°C
B) Humidex level 30°C to 39°C
C) Humidex level 40°C to 45°C
D) Humidex level over 45°C
E) Humidex level equal to body temperature

Question 24

According to ACGIH, what is the maximum recommended time a worker should be permitted to work outside if the temperature is -38°C and the wind is 20kp/h?

A) 75 minutes
B) 55 minutes
C) 40 minutes
D) 30 minutes
E) Non-emergency work is prohibited

Question 25

What would be the body's response if the core temperature was 33°C?

A) Metabolic rate increases
B) Pronounced shivering
C) Severe hypothermia
D) Progressive loss of consciousness begins
E) Pulmonary