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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 601 · 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.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
  2. 2.True or false: a paper towel lets water climb up it. (a) True (b) False
  3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
  4. 4.⚖️ 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
  5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) food colour (d) a few hours of waiting
  6. 6.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
  7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
  8. 8.⚖️ 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) False (b) True
  9. 9.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) 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) False (b) True
  11. 11.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
  12. 12.⚖️ 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 change it (b) we keep it the same (c) we measure it
  13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a sugar cube
  14. 14.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
  15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a white flower (d) a mirror
  16. 16.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
  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 glass of water (c) food colour (d) a balloon
  18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
  19. 19.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a cotton thread (d) a plastic ruler
  20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a white flower (d) a few hours of waiting
  21. 21.⚖️ 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 measure it (c) we change it
  22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) yeast (d) turmeric powder
  23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  24. 24.True or false: a rubber eraser does not let water climb. (a) True (b) False
  25. 25.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
  26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a magnet
  27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a white flower
  28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) yeast (d) a glass of water
  29. 29.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) turmeric powder
  31. 31.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a strip of cloth (d) a sugar cube
  32. 32.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
  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) time for colour to show (b) the kind of flower (c) the amount of water (d) the amount of colour
  34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
  35. 35.🧺 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 mirror (d) food colour
  36. 36.⚖️ 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 length of the stem (b) the amount of colour (c) the kind of flower (d) the room it stands in
  37. 37.⚖️ 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
  38. 38.⚖️ 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
  39. 39.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
  40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a sugar cube (d) a piece of chalk

Answer key

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

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