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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 746 · 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? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the amount of colour (d) the length of the stem
  2. 2.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
  3. 3.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
  4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
  5. 5.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
  6. 6.⚖️ 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
  7. 7.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
  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.⚖️ 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) True (b) False
  10. 10.⚖️ 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
  11. 11.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  12. 12.True or false: a glass marble lets water climb up it. (a) True (b) False
  13. 13.True or false: a flower stem does not let water climb. (a) False (b) True
  14. 14.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  15. 15.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
  16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a white flower (d) a magnet
  17. 17.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a plastic ruler (d) a flower stem
  18. 18.🧺 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 few hours of waiting (d) food colour
  19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a few hours of waiting (d) a glass of water
  20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
  21. 21.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
  22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) turmeric powder (d) a glass of water
  23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) turmeric powder (d) a few hours of waiting
  24. 24.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
  25. 25.⚖️ 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
  26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a few hours of waiting (d) yeast
  27. 27.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a rubber eraser (d) a paper towel
  28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a flower stem
  29. 29.🧺 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) a white flower
  30. 30.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
  31. 31.⚖️ 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) time for colour to show (c) the length of the stem
  32. 32.🔍 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 petals turn bluish (d) the flower floats away
  33. 33.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
  34. 34.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
  35. 35.⚖️ 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
  36. 36.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a steel spoon (d) a rubber eraser
  37. 37.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a piece of chalk
  39. 39.⚖️ 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
  40. 40.True or false: a piece of chalk does not let water climb. (a) True (b) False

Answer key

  1. time for colour to show
  2. not needed
  3. no colour change
  4. the kind of flower
  5. False
  6. False
  7. not needed
  8. True
  9. False
  10. we change it
  11. water does not climb
  12. False
  13. False
  14. water climbs up it
  15. capillary action
  16. a white flower
  17. a plastic ruler
  18. a battery cell
  19. a mirror
  20. a balloon
  21. through tiny stem tubes
  22. turmeric powder
  23. turmeric powder
  24. False
  25. True
  26. a few hours of waiting
  27. a rubber eraser
  28. a flower stem
  29. a magnet
  30. False
  31. the amount of colour
  32. the petals turn bluish
  33. wash your hands
  34. colour climbs up it
  35. False
  36. a flower stem
  37. water climbs up it
  38. a piece of chalk
  39. we keep it the same
  40. False

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