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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 273 · 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) the kind of flower (b) the amount of water (c) time for colour to show (d) the length of the stem
  2. 2.True or false: a piece of foil lets water climb up it. (a) True (b) False
  3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
  4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
  5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a cotton thread (d) a plastic ruler
  6. 6.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a magnet (d) turmeric powder
  8. 8.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a piece of foil (d) a steel spoon
  9. 9.⚖️ 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
  10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
  11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a mirror (d) a glass of water
  12. 12.⚖️ 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) False (b) True
  13. 13.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a steel spoon (d) a piece of foil
  14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
  15. 15.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
  16. 16.⚖️ 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 kept the same. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a rubber eraser (d) a plastic ruler
  18. 18.⚖️ 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
  19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
  20. 20.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
  21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
  22. 22.⚖️ 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) time for colour to show (b) the amount of colour (c) the kind of flower (d) the length of the stem
  23. 23.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
  24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
  25. 25.⚖️ 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 colour
  26. 26.⚖️ 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 keep it the same (c) we measure it
  27. 27.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
  28. 28.🧺 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) turmeric powder
  29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a plastic ruler (d) a steel spoon
  30. 30.⚖️ 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 amount of water (c) time for colour to show
  31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) food colour (d) a few hours of waiting
  32. 32.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  33. 33.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
  34. 34.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a cotton thread (d) a flower stem
  35. 35.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
  36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
  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 kept the same. (a) True (b) False
  38. 38.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  39. 39.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
  40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic

Answer key

  1. time for colour to show
  2. False
  3. they turn two colours
  4. False
  5. a cotton thread
  6. water does not climb
  7. food colour
  8. a sugar cube
  9. we keep it the same
  10. colour climbs up it
  11. a mirror
  12. False
  13. a cotton thread
  14. turmeric powder
  15. True
  16. False
  17. a strip of cloth
  18. False
  19. a battery cell
  20. False
  21. a balloon
  22. the length of the stem
  23. True
  24. a magnet
  25. the amount of colour
  26. we keep it the same
  27. no colour change
  28. turmeric powder
  29. a paper towel
  30. the amount of water
  31. a mirror
  32. water does not climb
  33. False
  34. a rubber eraser
  35. a grown-up
  36. needed
  37. True
  38. water does not climb
  39. False
  40. petals lose water to air

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