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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 364 · 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 flower stem (b) a piece of chalk (c) a cotton thread (d) a steel spoon
  2. 2.⚖️ 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 kept the same. (a) False (b) True
  3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
  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 length of the stem (c) the amount of water
  5. 5.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  6. 6.⚖️ 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
  7. 7.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
  8. 8.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
  9. 9.🔮 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
  10. 10.⚖️ 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 kind of flower (b) the length of the stem (c) the room it stands in (d) time for colour to show
  11. 11.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a paper towel (d) a piece of foil
  12. 12.⚖️ 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) True (b) False
  13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
  14. 14.True or false: a rubber eraser does not let water climb. (a) False (b) True
  15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
  16. 16.True or false: a piece of chalk does not let water climb. (a) False (b) True
  17. 17.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
  18. 18.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  19. 19.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
  20. 20.⚖️ 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 measure it (c) we keep it the same
  21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a steel spoon
  22. 22.True or false: a cotton thread lets water climb up it. (a) False (b) True
  23. 23.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a few hours of waiting
  25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  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 few hours of waiting (d) yeast
  27. 27.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a cotton thread (d) a paper towel
  28. 28.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  29. 29.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
  30. 30.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a sugar cube (d) a rubber eraser
  32. 32.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
  33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
  34. 34.⚖️ 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) False (b) True
  35. 35.⚖️ 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 measure it (c) we keep it the same
  36. 36.🧺 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) food colour (d) turmeric powder
  37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
  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 measure it (b) we change it (c) we keep it the same
  39. 39.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
  40. 40.⚖️ 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 amount of water (c) the kind of flower (d) the length of the stem

Answer key

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

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