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Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 941 · 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) food colour (d) a battery cell
  2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a white flower
  3. 3.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
  4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
  5. 5.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a flower stem (d) a rubber eraser
  6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) turmeric powder (d) a balloon
  7. 7.🧺 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 magnet (d) food colour
  8. 8.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
  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 length of the stem (c) the kind of flower (d) the amount of colour
  10. 10.⚖️ 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 measure it (c) we keep it the same
  11. 11.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
  12. 12.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
  13. 13.True or false: a strip of cloth lets water climb up it. (a) True (b) False
  14. 14.True or false: a cotton thread does not let water climb. (a) True (b) False
  15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) a mirror
  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) a magnet
  17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
  18. 18.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
  19. 19.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a paper towel
  20. 20.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
  21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
  22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
  23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
  24. 24.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
  25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
  26. 26.⚖️ 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
  27. 27.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
  28. 28.True or false: a steel spoon does not let water climb. (a) False (b) True
  29. 29.⚖️ 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) False (b) True
  30. 30.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
  31. 31.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
  32. 32.⚖️ 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 room it stands in
  33. 33.🧺 Do we need turmeric powder 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: time for colour to show is the one thing we change. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a steel spoon (d) a paper towel
  36. 36.⚖️ 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) True (b) False
  37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
  38. 38.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
  39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a glass of water (d) food colour
  40. 40.⚖️ 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

Answer key

  1. a battery cell
  2. a balloon
  3. a grown-up
  4. we measure it
  5. a flower stem
  6. food colour
  7. a magnet
  8. wash your hands
  9. the length of the stem
  10. we keep it the same
  11. needed
  12. they turn two colours
  13. True
  14. False
  15. a mirror
  16. a few hours of waiting
  17. a balloon
  18. not needed
  19. a paper towel
  20. a flower stem
  21. the petals turn bluish
  22. water climbs up it
  23. True
  24. True
  25. capillary action
  26. False
  27. not needed
  28. True
  29. False
  30. no colour change
  31. False
  32. the room it stands in
  33. not needed
  34. False
  35. a paper towel
  36. False
  37. colour climbs up it
  38. water does not climb
  39. turmeric powder
  40. we change it

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