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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 805 · 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.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a glass marble (d) a steel spoon
  2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
  3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
  4. 4.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
  6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a few hours of waiting (d) food colour
  7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) yeast
  8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a glass of water (d) a few hours of waiting
  9. 9.⚖️ 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 measure it (c) we change it
  10. 10.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
  11. 11.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
  12. 12.True or false: a cotton thread lets water climb up it. (a) True (b) False
  13. 13.⚖️ 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 kind of flower (c) time for colour to show
  14. 14.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
  15. 15.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
  16. 16.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a glass marble (d) a piece of chalk
  17. 17.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a steel spoon (d) a flower stem
  18. 18.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
  19. 19.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
  20. 20.True or false: a paper towel lets water climb up it. (a) False (b) True
  21. 21.⚖️ 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 keep it the same (c) we change it
  22. 22.⚖️ 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
  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 balloon (c) a glass of water (d) a white flower
  24. 24.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) a white flower
  26. 26.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
  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 the one thing we change. (a) False (b) True
  28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a battery cell (d) a few hours of waiting
  29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
  30. 30.🔮 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 fall off at once (c) they turn two colours (d) they stay white
  31. 31.⚖️ 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 what we measure. (a) False (b) True
  32. 32.True or false: a flower stem does not let water climb. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a piece of foil (d) a glass marble
  34. 34.⚖️ 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
  35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
  36. 36.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
  37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
  38. 38.True or false: a steel spoon lets water climb up it. (a) True (b) False
  39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
  40. 40.⚖️ 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

Answer key

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

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