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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 378 · 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 kept the same? (a) the length of the stem (b) time for colour to show (c) the kind of flower
  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) True (b) False
  3. 3.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a white flower (d) food colour
  6. 6.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
  7. 7.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
  8. 8.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
  9. 9.⚖️ 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 water (b) the room it stands in (c) the length of the stem (d) the amount of colour
  10. 10.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
  11. 11.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
  12. 12.🧺 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) a battery cell (d) a few hours of waiting
  13. 13.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
  14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
  15. 15.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a few hours of waiting (d) yeast
  17. 17.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a steel spoon (d) a plastic ruler
  18. 18.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
  19. 19.⚖️ 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
  20. 20.True or false: a flower stem lets water climb up it. (a) True (b) False
  21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
  22. 22.True or false: a piece of foil does not let water climb. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a white flower (d) a few hours of waiting
  24. 24.🧺 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) turmeric powder (d) food colour
  25. 25.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a plastic ruler (d) a paper towel
  26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
  27. 27.🔍 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
  28. 28.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
  29. 29.🧺 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) yeast (d) food colour
  30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
  31. 31.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a cotton thread (d) a piece of foil
  32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) a balloon
  33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
  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 the one thing we change. (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 water”? (a) we measure it (b) we change it (c) we keep it the same
  36. 36.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
  37. 37.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
  38. 38.⚖️ 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 what we measure. (a) False (b) True
  39. 39.🧺 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) a mirror
  40. 40.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True

Answer key

  1. the kind of flower
  2. True
  3. water does not climb
  4. not needed
  5. a magnet
  6. True
  7. needed
  8. False
  9. the length of the stem
  10. no colour change
  11. petals lose water to air
  12. a battery cell
  13. not needed
  14. capillary action
  15. water does not climb
  16. a few hours of waiting
  17. a strip of cloth
  18. a grown-up
  19. False
  20. True
  21. colour climbs up it
  22. True
  23. turmeric powder
  24. turmeric powder
  25. a plastic ruler
  26. we keep it the same
  27. the petals turn bluish
  28. through tiny stem tubes
  29. yeast
  30. we keep it the same
  31. a cotton thread
  32. a balloon
  33. needed
  34. False
  35. we keep it the same
  36. not needed
  37. not needed
  38. False
  39. a mirror
  40. False

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