Heat and Cold Stress Course 2026

This course is for security guards and other workers in Canada who work outdoors or in very hot or cold places. It covers how heat and cold affect the body, the warning signs of heat illness and cold injury, first steps to take and how to prevent harm. It is background knowledge only and does not replace a first aid course or your employer's heat and cold plans.

  • Corso
  • Canada
  • 25 domande
  • Verificato: 13 ottobre 2026

In breve

Questo corso gratuito ha circa 25 minuti di lezioni e un test di 25 domande. Con l’80% o più puoi scaricare un attestato di completamento (privato, non accreditato). Verificato sulle fonti ufficiali in data 13 ottobre 2026.

Inizia dalle lezioniHeat and Cold Stress Course: Lessons: circa 25 minuti di lettura. Ogni domanda del test è trattata nelle lezioni.

Cosa imparerai

  • Explain heat stress, humidex and wind chill in plain terms
  • Recognize the signs of heat exhaustion and heat stroke
  • Take the right first steps for heat stroke and hypothermia
  • Prevent heat stress with water, acclimatization and planning
  • Recognize frostnip, frostbite and trench foot
  • Dress in layers and plan warm-up breaks for cold work

Ottieni almeno l’80% per scaricare il tuo attestato.

  1. Domanda 1 di 25

    What is a normal core body temperature for a healthy person?
    Mostra la risposta

    Risposta: A. About 37°C

    CCOHS says the body normally keeps its core temperature near 37°C. A change of more than 1°C signals a problem.

  2. Domanda 2 di 25

    In workplace safety, what does "heat stress" mean?
    Mostra la risposta

    Risposta: B. The total heat load on a worker from work, surroundings and clothing

    CCOHS describes heat stress as the overall heat load from metabolic heat, environmental factors and clothing.

  3. Domanda 3 di 25

    What does the humidex tell you?
    Mostra la risposta

    Risposta: D. How hot it feels when heat and humidity combine

    Humidex estimates how hot people feel when warm temperatures and humidity combine, much like wind chill does for cold.

  4. Domanda 4 di 25

    According to CCOHS, what does a humidex of 46 or higher mean?
    Mostra la risposta

    Risposta: B. Dangerous; heat stroke possible

    CCOHS rates a humidex of 46 and over as dangerous, with heat stroke possible.

  5. Domanda 5 di 25

    Ontario's heat stress guidance points to a general duty in the OHS Act. What does that duty require of employers?
    Mostra la risposta

    Risposta: A. To take every reasonable precaution to protect workers

    Ontario's guidance says employers must take every reasonable precaution in the circumstances to protect workers, which may include protection from heat stress.

  6. Domanda 6 di 25

    Under BC's OHS Regulation, what must an employer do where workers may face heat stress?
    Mostra la risposta

    Risposta: C. Do a heat stress assessment and make an exposure control plan

    Section 7.29 of BC's OHS Regulation requires a heat stress assessment and a heat stress exposure control plan.

  7. Domanda 7 di 25

    A worker has sharp muscle pains after sweating heavily on a hot day. Which heat illness is most likely?
    Mostra la risposta

    Risposta: A. Heat cramps

    CCOHS says heat cramps are caused by a salt imbalance from heavy sweating. Move to a cool area and drink fluids.

  8. Domanda 8 di 25

    Which set of signs best fits heat exhaustion?
    Mostra la risposta

    Risposta: B. Heavy sweating, pale moist skin, nausea and thirst

    CCOHS lists heavy sweating, weakness, dizziness, nausea, headache, thirst and pale, cool, moist skin as signs of heat exhaustion.

  9. Domanda 9 di 25

    A guard on a hot site becomes confused and starts acting strangely. What should you do first?
    Mostra la risposta

    Risposta: C. Call 911, then start cooling them right away

    Confusion and odd behaviour in the heat point to heat stroke, a medical emergency. Call 911 and cool the person while you wait.

  10. Domanda 10 di 25

    A worker who was doing hard physical work collapses in the heat but is still sweating. Can it be heat stroke?
    Mostra la risposta

    Risposta: B. Yes, sweating does not rule out heat stroke

    CCOHS notes that exertional heat stroke, after hard work or exercise, often comes with sweating, so sweat does not rule it out.

  11. Domanda 11 di 25

    While waiting for paramedics for a person with heat stroke, where should you put cold, wet cloths or ice?
    Mostra la risposta

    Risposta: A. Head, neck, armpits and groin

    CCOHS first aid for heat stroke includes cold, wet cloths or ice on the head, neck, armpits and groin, after calling 911.

  12. Domanda 12 di 25

    How much water does CCOHS suggest a worker drink in hot conditions?
    Mostra la risposta

    Risposta: D. About 250 mL every 20 minutes

    CCOHS suggests about one cup (250 mL) every 20 minutes, even without thirst, and no more than 1.5 litres an hour.

  13. Domanda 13 di 25

    In hot work, what does "acclimatization" mean?
    Mostra la risposta

    Risposta: A. The body adjusting to heat over several days

    Acclimatization is the set of changes in the body after several days of heat exposure that help it cope with heat.

  14. Domanda 14 di 25

    CCOHS suggests a new worker in a hot job start at what level of heat exposure on day 1?
    Mostra la risposta

    Risposta: D. No more than 20% of normal

    CCOHS suggests no more than 20% exposure on day 1, adding no more than 20% on each extra day.

  15. Domanda 15 di 25

    Ontario's guidance says a worker who has been away for how long needs time to re-adjust to heat?
    Mostra la risposta

    Risposta: C. 9 days or more

    Ontario's heat stress guidance says workers returning after being ill or away for 9 or more days need to re-adjust to the heat gradually.

  16. Domanda 16 di 25

    When is the best time to schedule heavy outdoor tasks on a hot summer day?
    Mostra la risposta

    Risposta: D. In the cooler morning or evening

    CCOHS and Ontario both advise moving strenuous work to cooler times of the day.

  17. Domanda 17 di 25

    At what core body temperature does hypothermia begin?
    Mostra la risposta

    Risposta: D. Below 35°C

    CCOHS says hypothermia happens when the core body temperature falls below 35°C.

  18. Domanda 18 di 25

    Which is a safe way to help a person with hypothermia while waiting for help?
    Mostra la risposta

    Risposta: C. Warm their chest, armpits and groin with blankets

    CCOHS says to handle the person gently, warm the upper body such as the chest, armpits and groin, not rub the skin and not rewarm too quickly with a hot bath.

  19. Domanda 19 di 25

    Frostnip is best described as what?
    Mostra la risposta

    Risposta: D. A warning that frostbite is beginning

    CCOHS calls frostnip the mildest freezing injury and a warning that frostbite is beginning.

  20. Domanda 20 di 25

    A co-worker's frostbitten fingers could freeze again before you reach shelter. What should you do?
    Mostra la risposta

    Risposta: C. Do not thaw them until refreezing is no longer a risk

    CCOHS says do not thaw a frostbitten area if it may freeze again, do not rewarm it on site, and never rub it or apply snow.

  21. Domanda 21 di 25

    Trench (immersion) foot can happen at temperatures as high as about what?
    Mostra la risposta

    Risposta: B. 15.5°C

    CCOHS says trench foot can happen at temperatures as high as 15.5°C if the feet stay wet.

  22. Domanda 22 di 25

    Why is cotton not a good layer next to the skin for cold work?
    Mostra la risposta

    Risposta: D. It gets damp quickly and stops keeping you warm

    CCOHS does not recommend cotton because it gets damp quickly. Wool and synthetic fibres keep their insulation when wet.

  23. Domanda 23 di 25

    Below what temperature does CCOHS recommend mittens instead of gloves?
    Mostra la risposta

    Risposta: B. Below -17°C

    CCOHS recommends gloves for light work below 4°C and moderate work below -7°C, and mittens below -17°C.

  24. Domanda 24 di 25

    In BC, a nearby heated shelter must be available when the equivalent chill temperature drops below what?
    Mostra la risposta

    Risposta: D. -7°C

    Section 7.36 of BC's OHS Regulation requires a nearby heated shelter when the equivalent chill temperature is below -7°C.

  25. Domanda 25 di 25

    Why should workers avoid alcohol when working in the cold?
    Mostra la risposta

    Risposta: B. It gives a false feeling of warmth

    CCOHS says alcohol creates a false sense of warmth and increases the risk of cold injury.

Cosa sapere prima del test

  • Heat stroke is a medical emergency. Body temperature is often above 40°C. Call 911 and start cooling the person.
  • CCOHS suggests drinking about 250 mL of water every 20 minutes in the heat, even if you are not thirsty.
  • Hypothermia begins when core body temperature falls below 35°C.
  • BC requires heat and cold stress assessments and control plans where there is a risk (OHS Regulation ss. 7.29 and 7.34).
  • Ontario's heat stress guidance says employers must take every reasonable precaution to protect workers, which may include protection from heat stress.

Domande frequenti

What is the difference between heat exhaustion and heat stroke?

Heat exhaustion causes heavy sweating, weakness, nausea and pale, moist skin. Heat stroke is more serious: the person may be confused, collapse or have a seizure. Heat stroke is a medical emergency, so call 911.

How do I prevent frostbite on a winter patrol?

Dress in layers, cover your ears, wear mittens in deep cold, keep clothing dry and take warm-up breaks. Never ignore numbness, which is often the first sign.

Does this course count as first aid training?

No. It is background knowledge only. First aid for heat stroke and hypothermia is taught in a first aid course, and your province's OHS rules decide what first aid training your workplace needs.

Is there a temperature at which work must stop in Canada?

There is no single national cut-off. Each province and territory sets its own rules. For example, BC uses assessments and control plans, while Ontario points to the employer's duty to take every reasonable precaution.

L’attestato è accreditato o riconosciuto ufficialmente?

No. È un attestato di completamento privato, solo per le tue conoscenze. Non è riconosciuto, accreditato né approvato da alcun governo, ente di rilascio delle licenze, autorità di regolamentazione o istituto di istruzione e non sostituisce alcuna licenza, certificazione o formazione richiesta dalla legge.

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