Deck 5: Physical Agents

Question 1

What factor would explain why, in a cold climate, Worker A can raise their body temperature by four degrees by jogging on the spot or skipping with a rope, whereas Worker B can only raise their body temperature by two degrees?

A)Worker A is in better physical condition.
B)Worker B is an older worker.
C)Worker A is a non-smoker.
D)Worker B is female.

Answer 1

Worker B is female.

Question 2

Which of the following best characterizes how are ionizing and non-ionizing radiation differ?

A)the source
B)wavelength range
C)exposure control measures/methods
D)the path

Answer 2

wavelength range

Question 3

Gemma is employed as a seamstress for a family-run business located in the basement of the owner's house. Gemma should be concerned about which of the following?

A)whole body vibration
B)low frequency radiation
C)radon
D)homeostasis

Answer 3

radon

Question 4

Akanksha is a dental hygienist who cleans patients' teeth for 35 hours a week. What is the most realistic way of minimizing segmental vibration from the electric polishing brush?

A)using a manual polishing brush
B)reducing the number of patients that she sees
C)loosening her grip on the polishing brush
D)adding padding to the handle of the brush

Question 5

Which of the following decibel (dB) differences represents a doubling of "loudness"?

A)80 dB to 82 dB
B)80 dB to 83 dB
C)80 dB to 90 dB
D)80 dB to 160 dB

Question 6

Which of the following is commonly the cause of Reynaud's phenomenon?

A)thermal stress
B)vibration
C)noise
D)radiation

Question 7

When assessing the impact of vibration on employee health which of the following is NOT evaluated?

A)the source of the vibration energy
B)the intensity and frequency of the vibration
C)the part of the body that receives the vibration energy
D)the duration of exposure to the vibration

Question 8

What condition is an employee likely experiencing if he or she reports tingling in the fingers, loss of sensation in the fingers, and loss of grip strength?

A)HAVS
B)hyperpyrexia
C)hyperreflexia
D)neuritis

Question 9

Non-ionizing radiation is a hospital scanner as ionizing radiation is to

A)nuclear power generation.
B)lightening.
C)radon.
D)a microwave oven.

Question 10

According to the textbook a Canadian study found that approximately ______ million Canadians age 20-79 had hearing loss?

A)2.6
B)3.5
C)4.6
D)6.0

Question 11

HAVS is an acronym for which of the following syndromes?

A)hearing adherence vibration syndrome
B)hearing accumulation vibration syndrome
C)hearing avocation vibration syndrome
D)hand-arm vibration syndrome

Question 12

Rick is the supervisor of a road crew working on highway resurfacing. What administrative control would help his workers acclimatize to working in the heat?

A)a heat stress assessment
B)reduced worker activity
C)cooling vests
D)mandatory water break policy

Question 13

Which of the following forms of ionizing radiation does not occur naturally?

A)gamma rays
B)X-rays
C)alpha particles
D)beta particles

Question 14

What heat-related condition could you resolve by giving workers salty crackers along with some water?

A)heat stroke
B)heat syncope
C)heat cramps
D)heat hyperpyrexia

Question 15

What statistical value should Aiko look at to compare the hearing protection of various devices on the market?

A)dB(A)
B)Hz
C)watt
D)NRR

Question 16

Which is the cause of early warning change?

A)radiation
B)cold temperatures
C)noise
D)vibration

Question 17

At what core body temperature does mild hypothermia start to set in?

A)23.9^oC to 25.6^o C
B)32.2^oC to 30^oC
C)37.2^oC to 36.1^oC
D)35^oC to 33.9^oC

Question 18

Older watch faces that would "glow in the dark" are an example of

A)non-ionizing radiation.
B)infrared radiation.
C)radon.
D)manufactured ionizing radiation.

Question 19

What is the required noise attenuation in a commercial laundry where actual noise level is 95 dB(A) and the standard is 88 dB(a) for eight hours?

A)1 dB(A)
B)14 dB(A)
C)49 dB(A)
D)176 dB(A)

Question 20

According to the Canadian Centre for Occupational Health and Safety, when might a workplace be too noisy?

A)when employees have to raise their voices to be understood
B)when employees have chronic ear infections
C)when employees have a general feeling of fatigue
D)when one employee has a hearing problem

Question 21

A sore neck can be a symptom of segmental vibration.

Question 22

Conductive hearing loss can be caused by a buildup of ear wax from the improper use of ear plugs.

Question 23

A dosimeter is designed to measure a person's exposure to noise for one shift as a percentage.

Question 24

It is rare to see employees in a trendy club wearing any kind of hearing protection. As the new HR manager, explain why club owners and managers may not be protecting club employees from excessive noise and what you could suggest to them that might reduce the risk of hearing loss.

Question 25

What obligations do employers have to ensure that the workers are safe from the dangers of heat exposure?

Question 26

Imagine a large-scale kitchen operation such as the Mandarin, Boston Pizza, or Swiss Chalet. Even though restaurant customers might experience a relatively quiet, comfortable, and relaxing atmosphere out front, in the kitchen area there are many physical agents that can impair the safety and health of kitchen workers and servers.
If a kitchen worker gets locked into the walk-in freezer either by accident or by a misguided prank, when you finally find them what symptom would tell you that they are suffering from moderate hypothermia?

A)intense pain in fingers
B)abnormal drowsiness
C)decreased respiration
D)irrational behaviour

Question 27

Imagine a large-scale kitchen operation such as the Mandarin, Boston Pizza, or Swiss Chalet. Even though restaurant customers might experience a relatively quiet, comfortable, and relaxing atmosphere out front, in the kitchen area there are many physical agents that can impair the safety and health of kitchen workers and servers.
There are four mechanical dishwashers in the kitchen running at the following sound ratings: 82 dB, 84 dB, 86 dB, and 88 dB. A 2 dB difference translates to a noise factor increase of 2.1 dB, a 4 dB difference to a factor of 1.5, and a 6 dB difference to a factor of 1.0. Given this information, what is the total noise level coming from the dishwashers?

A)85.0 dB
B)86.1 dB
C)87.5 dB
D)89.0 dB

Question 28

Describe the legal steps an employer/HRM must take to control hazardous noise in the workplace. What is the most effective noise control method?

Question 29

Vasoconstriction affects the bronchial tubes.

Question 30

NIHL is typically a cumulative process.

Question 31

The effects of radiation depend on the frequency of radiation.

Question 32

The heat level in a crowded room or subway car rises due to convection.

Question 33

Discuss commonalities in regards to the origins, effects, and control of the four types of physical agents.

Question 34

Imagine a large-scale kitchen operation such as the Mandarin, Boston Pizza, or Swiss Chalet. Even though restaurant customers might experience a relatively quiet, comfortable, and relaxing atmosphere out front, in the kitchen area there are many physical agents that can impair the safety and health of kitchen workers and servers.
During the dinner hour when there are a lot of boiling pots, frying pans, and hot ovens in constant operation, what is likely to be the typical humidex range captured using the WGBT index?

A)20-29 degrees C
B)30-39 degrees C
C)40-45 degrees C
D)46+ degrees C

Question 35

If a roofer is suffering from hyperpyrexia after installing replacement shingles for eight hours in the hot sun their skin will be dry and tight.

Question 36

While at work, Zamboni drivers who resurface the ice in hockey arenas are more likely to have lower blood pressure than athletic trainers working in arena dressing rooms.

Question 37

Hyperreflexia can be caused by noise.

Question 38

Imagine a large-scale kitchen operation such as the Mandarin, Boston Pizza, or Swiss Chalet. Even though restaurant customers might experience a relatively quiet, comfortable, and relaxing atmosphere out front, in the kitchen area there are many physical agents that can impair the safety and health of kitchen workers and servers.
From which source could a chef or sous chef (preparation cook) be exposed to ionizing radiation?

A)microwave oven
B)kitchen computer
C)vegetables
D)aluminum pan

Question 39

Describe several factors that the Canadian Forces would have to take into account in developing a cold-weather occupational health and safety strategy for Forces members working at bases in the northernmost territories of Canada (Yukon, Northwest Territory, and Nunavut).

Question 40

Imagine a large-scale kitchen operation such as the Mandarin, Boston Pizza, or Swiss Chalet. Even though restaurant customers might experience a relatively quiet, comfortable, and relaxing atmosphere out front, in the kitchen area there are many physical agents that can impair the safety and health of kitchen workers and servers.
The kitchen has a number of large floor-standing mixers for mixing large batches of cake and bread dough. The frequency of these mixers is 75 Hz. What part of the body would be affected by resonance at this frequency?

A)head
B)eyeballs
C)shoulder
D)arms