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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 855 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) yeast (d) food colour
  2. 2.True or false: a rubber eraser does not let water climb. (a) False (b) True
  3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a few hours of waiting (d) turmeric powder
  4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
  5. 5.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
  6. 6.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a rubber eraser
  7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (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? True or false: the room it stands in is kept the same. (a) True (b) False
  9. 9.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
  10. 10.True or false: a rubber eraser lets water climb up it. (a) True (b) False
  11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
  12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) food colour (d) a glass of water
  13. 13.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
  14. 14.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
  15. 15.⚖️ 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) the kind of flower (c) time for colour to show (d) the room it stands in
  16. 16.🔮 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 stay white (c) they all turn green (d) they fall off at once
  17. 17.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a cotton thread
  18. 18.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
  19. 19.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
  20. 20.🧺 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 few hours of waiting (d) turmeric powder
  21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) turmeric powder
  22. 22.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
  23. 23.⚖️ 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 length of the stem (c) the room it stands in (d) time for colour to show
  24. 24.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
  25. 25.True or false: a sugar cube lets water climb up it. (a) False (b) True
  26. 26.⚖️ 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) False (b) True
  27. 27.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
  28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
  29. 29.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  30. 30.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a sugar cube (d) a steel spoon
  31. 31.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
  32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) food colour (d) a few hours of waiting
  33. 33.⚖️ 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
  34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a few hours of waiting
  35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
  36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
  37. 37.⚖️ 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
  38. 38.⚖️ 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
  39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
  40. 40.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a paper towel

Answer key

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

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