Biology  by Bradford
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A1.1 Water: grass skirts

20 quick questions on water, 17 of them at standard level, each answered in a word or two. Print a sheet for each team, a key for the checker and a tick sheet, then tape the sheets to the board and race.

How it runs

  1. SnipA runner cuts one strip off the bottom of their team’s sheet.
  2. Answer as a pairBack at the table, they write the answer on the strip. No books.
  3. Get it checkedThe checker reads it against the key: you, or a student holding it.
  4. Back for the nextA tick earns the next strip. Wrong? Back to the table to try again.

The questions on this sheet

The checker’s key, with every answer, prints with the sheets.
  1. Pull of δ⁻ O on δ⁺ H of another molecule
  2. Water molecules sticking to each other
  3. Water sticking to polar surfaces
  4. Skin-like film where water meets air
  5. Polar or charged and attracted to water
  6. Non-polar, so does not dissolve in water
  7. Liquid making up most of a solution
  8. Upward force letting aquatic animals float
  9. Less dense solid that floats on lakes
  10. Unequal sharing of electrons between atoms
  11. Water rising up a narrow tube or soil pore
  12. Energy to raise 1 g by 1 °C
  13. How fast heat flows through a substance
  14. Resistance of a fluid to flowing
  15. Body chilling as sweat turns to vapour
  16. Rocky bodies thought to have brought water
  17. Force that holds water vapour near Earth
  18. Orbits where surface water stays liquid
  19. Diving bird with heavy, dense bones
  20. Arctic mammal using blubber to stay warm

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