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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 584 · 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 length of the stem is kept the same. (a) True (b) False
  2. 2.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
  4. 4.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a steel spoon (d) a piece of foil
  5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
  6. 6.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
  7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
  8. 8.⚖️ 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 change it (c) we measure it
  9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
  10. 10.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a rubber eraser
  11. 11.⚖️ 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 water (c) time for colour to show (d) the kind of flower
  12. 12.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  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 room it stands in (b) time for colour to show (c) the length of the stem
  14. 14.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
  15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a glass of water (d) a few hours of waiting
  16. 16.True or false: a sugar cube lets water climb up it. (a) False (b) True
  17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a balloon
  18. 18.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
  19. 19.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
  20. 20.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  21. 21.💧 Which of these does not let water climb? (a) a piece of chalk (b) a glass marble (c) a cotton thread (d) a flower stem
  22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a mirror (d) food colour
  23. 23.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
  24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) food colour
  25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a balloon (d) a few hours of waiting
  26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
  27. 27.🔮 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 fall off at once (c) they all turn green (d) they stay white
  28. 28.True or false: a flower stem lets water climb up it. (a) True (b) False
  29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a white flower (d) a glass of water
  30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
  31. 31.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a mirror (d) a glass of water
  33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
  34. 34.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a sugar cube
  35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
  36. 36.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a balloon
  38. 38.⚖️ 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 what we measure. (a) True (b) False
  39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
  40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a paper towel (d) a strip of cloth

Answer key

  1. False
  2. water climbs up it
  3. colour climbs up it
  4. a paper towel
  5. needed
  6. not needed
  7. we keep it the same
  8. we change it
  9. no colour change
  10. a rubber eraser
  11. the length of the stem
  12. water does not climb
  13. the room it stands in
  14. not needed
  15. a battery cell
  16. True
  17. a balloon
  18. True
  19. wash your hands
  20. water does not climb
  21. a glass marble
  22. food colour
  23. True
  24. yeast
  25. a few hours of waiting
  26. a magnet
  27. they turn two colours
  28. True
  29. yeast
  30. capillary action
  31. water climbs up it
  32. a mirror
  33. False
  34. a sugar cube
  35. needed
  36. water climbs up it
  37. a balloon
  38. True
  39. the petals turn bluish
  40. a steel spoon

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