Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 295 · 40 questions

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.

1. 1.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
2. 2.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a glass of water (d) yeast
6. 6.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a balloon
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a magnet (d) a balloon
10. 10.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a piece of foil (d) a paper towel
11. 11.⚖️ 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
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a white flower (d) a few hours of waiting
15. 15.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a steel spoon (d) a plastic ruler
16. 16.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a paper towel (c) a piece of foil (d) a steel spoon
17. 17.⚖️ 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 amount of water (b) the amount of colour (c) the length of the stem (d) time for colour to show
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) yeast (d) a battery cell
19. 19.⚖️ 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 keep it the same (b) we change it (c) we measure it
20. 20.⚖️ 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) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a battery cell
22. 22.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a rubber eraser (d) a steel spoon
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
24. 24.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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) the length of the stem (b) time for colour to show (c) the amount of colour
26. 26.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
28. 28.🧺 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 mirror
29. 29.🔮 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 all turn green (c) they stay white (d) they fall off at once
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a cotton thread (d) a steel spoon
31. 31.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
33. 33.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
35. 35.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.True or false: a piece of foil lets water climb up it. (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: time for colour to show is the one thing we change. (a) False (b) True
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) food colour (d) a balloon
39. 39.⚖️ 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
40. 40.💧 Which of these does not let water climb? (a) a strip of cloth (b) a rubber eraser (c) a cotton thread (d) a sugar cube

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