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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 618 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a mirror
  2. 2.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
  3. 3.⚖️ 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 colour (b) the length of the stem (c) time for colour to show
  4. 4.🔮 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
  5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we change it (c) we measure it
  6. 6.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  7. 7.⚖️ 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 water (b) the length of the stem (c) the room it stands in (d) the amount of colour
  8. 8.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
  9. 9.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
  10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
  11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) turmeric powder
  12. 12.🔍 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
  13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
  14. 14.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show
  15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a balloon
  16. 16.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a sugar cube
  17. 17.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
  18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a balloon (c) a white flower (d) yeast
  19. 19.True or false: a mirror is not 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 amount of colour is what we measure. (a) False (b) True
  21. 21.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  22. 22.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  23. 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
  24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
  25. 25.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a piece of foil (d) a rubber eraser
  26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a few hours of waiting
  27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
  28. 28.⚖️ 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
  29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) turmeric powder (d) a magnet
  30. 30.True or false: a glass marble lets water climb up it. (a) True (b) False
  31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
  32. 32.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
  33. 33.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
  34. 34.True or false: a cotton thread lets water climb up it. (a) False (b) True
  35. 35.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a rubber eraser (d) a strip of cloth
  36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a battery cell (d) a few hours of waiting
  37. 37.True or false: a steel spoon lets water climb up it. (a) True (b) False
  38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) food colour
  39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a paper towel (d) a piece of chalk
  40. 40.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism

Answer key

  1. a mirror
  2. a grown-up
  3. the amount of colour
  4. no colour change
  5. we keep it the same
  6. water climbs up it
  7. the length of the stem
  8. wash your hands
  9. needed
  10. True
  11. turmeric powder
  12. the petals turn bluish
  13. True
  14. the amount of water
  15. a balloon
  16. a sugar cube
  17. True
  18. a white flower
  19. True
  20. False
  21. water climbs up it
  22. water climbs up it
  23. we change it
  24. colour climbs up it
  25. a cotton thread
  26. a balloon
  27. False
  28. we keep it the same
  29. a few hours of waiting
  30. False
  31. we keep it the same
  32. not needed
  33. needed
  34. True
  35. a rubber eraser
  36. a battery cell
  37. False
  38. a magnet
  39. a steel spoon
  40. capillary action

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