Section F — Coach Hot — Why Heat Matters
This section covers Chapter 1, Lessons 1.1 through 1.4.
Part A — Vocabulary (20 points, 2 points each)
Select the best answer for each question.
1. Vasodilation is:
A) The same as vasoconstriction B) When blood vessels — especially near the skin — widen so more warm blood can reach the surface and release heat C) A type of muscle D) A way to lose weight
2. Sweat is:
A) A waste product like urine B) Water (with some salts) that your sweat glands release to the skin surface — when it evaporates, it cools you C) Pure water without anything dissolved D) A type of bacteria
3. Evaporation is:
A) When water freezes B) When liquid water turns into vapor — this takes a lot of energy from the surface it leaves, which is why sweating cools you C) When water turns into ice D) When water boils only
4. Persistence hunting is:
A) Catching prey quickly with one big sprint B) A hunting style some humans used, where they tracked an animal for hours in the heat until the animal overheated and could no longer run — humans win by enduring heat C) A type of fishing D) A modern Olympic sport
5. Heat exhaustion is:
A) Just being a little tired B) An early heat illness with heavy sweating, headache, dizziness, nausea, weakness, and cool clammy skin — needs cooling and rest C) The same as fitness D) Only seen in adults
6. Heat stroke is:
A) The same as heat exhaustion B) A medical emergency in which the body's cooling system fails — high body temperature, confusion, sometimes hot dry skin or sometimes still sweating, possible collapse — call for help C) A type of stroke that only happens in the brain D) A way to feel better in hot weather
7. Acclimation to heat means:
A) Avoiding heat completely B) The body's gradual adjustment to heat over days and weeks — sweating starts earlier, sweat carries less salt, plasma volume rises C) A type of medicine D) The same as hypothermia
8. Sweat rate is:
A) How fast you walk B) How much fluid you lose per unit of time through sweating — varies a lot person to person C) How hot the air is D) A muscle in the chest
9. Electrolytes are:
A) Tiny electronic devices B) Salts in body fluids (like sodium, potassium, chloride) that help nerves fire and muscles work C) Vitamins only D) A type of fat
10. Hyponatremia is:
A) High blood sodium B) Low blood sodium — can happen when someone drinks a lot of plain water without replacing salt during long heavy sweating C) A type of breath D) A skin condition
Part B — Concept Comprehension (20 points, 2 points each)
Select the best answer for each question.
11. When your skin gets hot, your body usually:
A) Tightens blood vessels and shivers B) Widens blood vessels and produces sweat — both move heat away from the body C) Goes to sleep D) Has no response
12. Sweat cools you primarily by:
A) Wetting your shirt B) Evaporating from the skin — when water turns into vapor, it carries heat energy away C) Sliding down your face D) Smelling like minerals
13. Coach Hot says humans are one of the best heat-handling land mammals because:
A) We have thick fur B) We sweat very efficiently and can keep moving in heat that would stop most other large animals C) We hibernate D) We have cold blood
14. A typical sweat rate during heavy exercise in the heat can be approximately:
A) 1 milliliter per hour B) About half a liter to more than a liter per hour, depending on the person C) 10 liters per minute D) Sweating does not happen during exercise
15. Warning signs of heat exhaustion include:
A) Only feeling great and energetic B) Heavy sweating, headache, dizziness, nausea, weakness, and cool clammy skin C) Only being very cold D) Loud singing
16. Warning signs of heat stroke (a medical emergency) include:
A) Just feeling a little warm B) Confusion, very high body temperature, sometimes hot dry skin or still heavy sweating, possible collapse — and the need to call for help right away C) Only sneezing D) Hunger
17. Drinking too much plain water during long heavy sweating can be a problem because:
A) Water is always good in any amount B) Replacing only water and not the salts you lost in sweat can dilute the sodium in your blood, which can be dangerous C) Water gets you drunk D) Water turns into urine immediately
18. Drinking too little water during long heavy sweating can be a problem because:
A) The body will simply make its own water B) Sweat loss without replacement leads to dehydration, which can cause headache, dizziness, weakness, and reduced ability to cool down C) It is always healthy to skip drinking D) Bodies do not lose water through sweat
19. Coach Hot at Grade 6 does not teach you to:
A) Recognize heat exhaustion vs heat stroke B) Follow a specific sauna or hot-bath protocol on your own C) Know what sweat does D) Drink water in hot weather
20. Coach Hot's main message is:
A) Heat is the enemy B) Heat is not your enemy — used badly it can hurt you, but used wisely with proper hydration and pacing it is something your body was built to handle C) Avoid the sun forever D) Only drink salty drinks
Part C — Application (30 points, 6 points each)
Write 2-3 complete sentences for each question.
21. Describe the difference between vasoconstriction (Lesson Cold 1.2) and vasodilation (Lesson Hot 1.1). Why does the body do opposite things in cold versus heat?
22. Safety recognition. A friend is at soccer practice in 95°F heat. They have been sweating heavily, then complain of dizziness and a strong headache, and their skin is cool and clammy. What heat illness pattern does this match, and what should you do? (You may also describe what you would not do.)
23. Safety recognition. Imagine a different friend at the same practice. They have stopped sweating. They seem confused about where the locker room is. Their skin feels hot. What pattern does this match, and why does it require calling for help right away rather than just rest?
24. A teammate says, "I'm fine — I'll just chug a giant bottle of plain water and feel better." Why is "drink as much plain water as possible" not the right approach during long heavy sweating? Use the word electrolytes in your answer.
25. Coach Hot says humans are one of the best heat-handling land mammals on the planet. Describe one feature of human biology from Lesson 1.2 that helps with heat, and one historical example (like persistence hunting) from the chapter.
Continue to Section G — Coach Breath.