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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 265 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
  2. 2.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  3. 3.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
  4. 4.True or false: a piece of chalk lets water climb up it. (a) True (b) False
  5. 5.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  6. 6.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a cotton thread (d) a paper towel
  7. 7.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
  8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we change it (c) we measure it
  9. 9.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
  10. 10.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  11. 11.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
  12. 12.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
  13. 13.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
  14. 14.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
  16. 16.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
  17. 17.💧 Which of these does not let water climb? (a) a glass marble (b) a flower stem (c) a paper towel (d) a strip of cloth
  18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) a mirror (d) a battery cell
  19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
  20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a magnet
  21. 21.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
  22. 22.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
  23. 23.🧺 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) food colour (d) a magnet
  24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
  25. 25.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a piece of foil (d) a glass marble
  26. 26.True or false: a sugar cube lets water climb up it. (a) False (b) True
  27. 27.⚖️ 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
  28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a mirror
  29. 29.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
  30. 30.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  31. 31.⚖️ 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 amount of water (b) the length of the stem (c) time for colour to show
  32. 32.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
  33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
  34. 34.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a cotton thread (d) a plastic ruler
  35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) food colour
  36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
  37. 37.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
  38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) yeast (d) a few hours of waiting
  39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
  40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

Answer key

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

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