Section I — Coach Water — Why Water 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. H₂O is the chemical formula for:
A) Hydrogen gas B) Water — two hydrogen atoms and one oxygen atom C) Oxygen gas D) Hot air
2. A polar molecule is:
A) A molecule that lives at the North Pole B) A molecule with an uneven distribution of electrical charge — one slightly positive end and one slightly negative end C) A type of food D) Any molecule made of three atoms
3. A hydrogen bond is:
A) A type of glue B) A weak electrical attraction between the slightly positive end of one polar molecule and the slightly negative end of another C) A strong chemical bond inside a single water molecule D) The same as a nuclear bond
4. A solvent is:
A) A substance that dissolves other substances B) The same as a salt C) A type of ice D) A vitamin
5. Intracellular fluid (ICF) is:
A) Water outside cells B) Water inside cells — about two-thirds of all the water in your body C) Water only in the bloodstream D) Water in your urine
6. Extracellular fluid (ECF) is:
A) Water inside cells B) Water outside cells — between cells and in blood plasma — about one-third of body water C) Hydrogen gas only D) Water only in the eye
7. Metabolic water is:
A) Water you drink B) Water produced inside your cells as a byproduct when your body breaks down food for energy C) Water in cucumbers and watermelon D) Water in your urine
8. Insensible water loss is:
A) Water lost through the skin and breath even when you are not actively sweating B) Water you cannot taste C) Water you spill on accident D) Water that disappears in storms
9. Thirst is:
A) A late signal — your body has been adjusting for water loss for a while before you consciously feel thirsty B) Always present from the moment of any water loss C) A myth D) Only a feeling adults get
10. Urochrome is:
A) A type of bone B) The pigment that gives urine its yellow color — the amount of dilution in urine controls its color C) A type of bacteria D) A type of food
Part B — Concept Comprehension (20 points, 2 points each)
Select the best answer for each question.
11. Approximately what percent of an adolescent's body is water?
A) 10% B) 30% C) 60% D) 95%
12. The largest body-water compartment is:
A) Blood plasma B) Tears and saliva C) Water inside cells D) Water between cells
13. Compared to bone or fat, the brain is:
A) Drier B) Wetter — about 75% water C) Only 1% water D) Made entirely of water
14. Water in / water out, total per day, for a typical adolescent, is roughly:
A) A teaspoon B) About 2 to 2.5 liters C) 50 liters D) Less than a cup
15. Sources of water coming into your body include:
A) Breathing in steam only B) Beverages, water in food, and metabolic water (from your cells breaking down food for energy) C) Sweating D) Skin only
16. Routes of water leaving your body include:
A) Urine, sweat, breath, and stool — plus insensible loss through skin B) Only urine C) Only sweat D) None — water stays in the body
17. Coach Water explains that thirst is a late signal because:
A) Bodies are slow to feel anything B) Your kidneys and hormones have been adjusting for water loss before the conscious feeling of thirst arrives C) Thirst is the very first thing to happen D) Thirst is fake
18. The "8 glasses a day" rule:
A) Comes from extremely strong research B) Does not come from strong research — daily water needs vary by body size, activity, climate, diet, and more C) Was proven in 2024 D) Is required by law
19. Coach Water at Grade 6 does not tell you to:
A) Notice your urine color B) Drink water during the day C) Count every ounce of water using a specific personal target D) Eat water-rich foods
20. Coach Water's main message at Grade 6 is:
A) Water is unimportant B) You are mostly water; your body manages it carefully; pay attention to urine color and drink regularly; respect water as life and as a real physical force C) Drink more water than humanly possible every day D) Avoid water
Part C — Application (30 points, 6 points each)
Write 2-3 complete sentences for each question.
21. Use the urine-color chart from Lesson 1.4. Describe what pale yellow urine and dark amber urine each suggest about hydration. Why is this a useful signal?
22. Metabolic water is produced when your body breaks down food for energy. About how many milliliters per day does this contribute (use the number from Lesson 1.3)? Why does this not replace the need to drink?
23. Safety recognition. A friend has been swimming in a deep lake by themselves while their parent is shopping. Why does Coach Water say this is not safe? Use the "respect water" framing from Lesson 1.4.
24. Why is "drink 8 glasses of water a day" not really a precise medical rule? Name two factors that change how much water a specific person needs.
25. Explain in your own words why thirst is a late signal and what that means for how you should drink across the day.
Continue to Section J — Synthesis Essay.