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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 419 · 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.True or false: a strip of cloth does not let water climb. (a) False (b) True
  2. 2.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
  3. 3.⚖️ 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
  4. 4.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
  5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a glass marble (d) a sugar cube
  6. 6.⚖️ 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
  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 water”? (a) we change it (b) we keep it the same (c) we measure it
  8. 8.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a sugar cube (d) a cotton thread
  9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
  10. 10.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  11. 11.⚖️ 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) False (b) True
  12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
  13. 13.💧 Which of these lets water climb up it? (a) a cotton thread (b) a plastic ruler (c) a glass marble (d) a rubber eraser
  14. 14.True or false: a glass marble does not let water climb. (a) False (b) True
  15. 15.🔍 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
  16. 16.🧺 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 white flower (d) a glass of water
  17. 17.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a piece of chalk
  18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
  19. 19.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
  20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a white flower (d) a magnet
  21. 21.⚖️ 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
  22. 22.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a piece of chalk
  23. 23.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
  24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a few hours of waiting (d) food colour
  25. 25.True or false: a sugar cube does not let water climb. (a) True (b) False
  26. 26.⚖️ 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 the one thing we change. (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 amount of water is what we measure. (a) True (b) False
  28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) time for colour to show (c) the amount of colour (d) the kind of flower
  29. 29.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a glass marble
  30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
  31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
  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 length of the stem (b) the kind of flower (c) time for colour to show
  33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
  34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a few hours of waiting (d) food colour
  35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a magnet
  36. 36.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
  37. 37.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a strip of cloth (d) a steel spoon
  38. 38.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
  39. 39.⚖️ 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 colour (b) the kind of flower (c) the length of the stem (d) the room it stands in
  40. 40.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

Answer key

  1. False
  2. False
  3. we change it
  4. no colour change
  5. a glass marble
  6. we keep it the same
  7. we keep it the same
  8. a plastic ruler
  9. a grown-up
  10. water climbs up it
  11. True
  12. not needed
  13. a cotton thread
  14. True
  15. the petals turn bluish
  16. turmeric powder
  17. a piece of chalk
  18. False
  19. needed
  20. a white flower
  21. True
  22. a piece of chalk
  23. not needed
  24. yeast
  25. False
  26. False
  27. False
  28. time for colour to show
  29. a sugar cube
  30. needed
  31. colour climbs up it
  32. the kind of flower
  33. turmeric powder
  34. a balloon
  35. a magnet
  36. not needed
  37. a steel spoon
  38. True
  39. the length of the stem
  40. water climbs up it

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