Deck 5: Physical Agents

Question 1

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

Answer 1

when employees have to raise their voices to be understood

Question 2

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

Answer 2

80 dB to 83 dB

Question 3

In what three ways can noise affect humans?

A)cognitive effects, sensorineural damage, and sociological effects
B)physiological damage, physiological effects, and psychological effects
C)sociological damage, psychological effects, and sensorineural damage
D)physiological effects, sociological effects, and cognitive damage

Answer 3

physiological damage, physiological effects, and psychological effects

Question 4

What index is used to measure thermal stress?

A)global temperature index
B)humidex range index
C)comfort index
D)wet bulb globe temperature index

Question 5

School boards can generate the "free field effect" for teachers by taking what action?

A)requiring open classroom windows
B)installing white noise machines
C)having longer recess and lunch periods
D)making teachers close classroom doors

Question 6

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 7

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 8

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 9

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 10

What two basic types of physiological damage can create hearing loss?

A)trauma and infection
B)sensorineural and infection
C)conductive and sensorineural
D)trauma and conductive

Question 11

What three characteristics is the human hearing response conditional on?

A)duration, standards, and loudness
B)loudness, duration, and level
C)frequency, standards, and level
D)frequency, duration, and loudness

Question 12

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 13

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 14

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 15

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

A)23.9°C to 25.6° C
B)32.2°C to 30°C
C)37.2°C to 36.1°C
D)35°C to 33.9°C

Question 16

Long-distance truck drivers could be subject to what whole-body vibration-related problem as a result of sitting over or near the engine for long periods of time?

A)Raynaud's phenomenon
B)impaired vision
C)sore joints
D)muscle atrophy

Question 17

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.

Question 18

Which of the following devices emits ionizing radiation?

A)computer monitor
B)fluorescent light
C)tanning bed
D)hospital scanner

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

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 21

As their popularity increases,the move from playing in small clubs to playing in large stadiums can produce tinnitus for band members if they are not careful.

Question 22

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

Question 23

To measure the gross noise level in the casino,the casino's health and safety manager,Kamran,will use an octave band analyzer.

Question 24

Hyperpyrexia is the condition of unusually quick reaction by the nerves to some external stimulus.

Question 25

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

Question 26

Scenario 5-1: 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 27

Scenario 5-1: 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 28

Scenario 5-1: 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 29

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 30

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 31

Dog trainers can experience hearing loss from using a "silent" dog whistle.

Question 32

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 33

Scenario 5-1: 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 34

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 35

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 36

Temporary threshold shifts (TTS)is the term used to describe gradual hearing loss.

Question 37

Engineers working in the engine room of a cruise ship are more likely to experience segmental vibration than chefs working in the cruise ship kitchen.

Question 38

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

Question 39

The eye is the primary organ at risk from non-ionizing radiation.

Question 40

Scenario 5-1: 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