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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 812 · 40 questions
TalentJR

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

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  1. 1.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
  2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
  3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
  4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a glass of water (d) a battery cell
  5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
  6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a mirror
  7. 7.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a paper towel (d) a rubber eraser
  8. 8.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
  9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
  10. 10.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a cotton thread
  11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
  12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
  13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) turmeric powder (d) a magnet
  14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
  15. 15.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a cotton thread (d) a flower stem
  16. 16.True or false: a piece of chalk does not let water climb. (a) False (b) True
  17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
  18. 18.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
  19. 19.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
  20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) True (b) False
  21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
  22. 22.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a piece of chalk (d) a glass marble
  23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
  24. 24.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
  25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) food colour (d) a white flower
  26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) time for colour to show (c) the length of the stem
  27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the kind of flower (c) the room it stands in (d) the length of the stem
  28. 28.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
  30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
  31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) a mirror
  32. 32.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a flower stem
  33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) time for colour to show (c) the length of the stem (d) the amount of water
  34. 34.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
  35. 35.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a rubber eraser (d) a plastic ruler
  36. 36.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
  37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a steel spoon (d) a rubber eraser
  38. 38.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
  39. 39.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
  40. 40.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True

Answer key

  1. colour climbs up it
  2. we change it
  3. yeast
  4. a glass of water
  5. False
  6. a mirror
  7. a rubber eraser
  8. wash your hands
  9. they turn two colours
  10. a cotton thread
  11. we keep it the same
  12. we keep it the same
  13. food colour
  14. not needed
  15. a rubber eraser
  16. False
  17. a magnet
  18. not needed
  19. True
  20. False
  21. the petals turn bluish
  22. a glass marble
  23. True
  24. no colour change
  25. a balloon
  26. the room it stands in
  27. the length of the stem
  28. water climbs up it
  29. turmeric powder
  30. we measure it
  31. a mirror
  32. a steel spoon
  33. time for colour to show
  34. True
  35. a cotton thread
  36. through tiny stem tubes
  37. a paper towel
  38. a grown-up
  39. False
  40. False

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