Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 360 · 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.⚖️ 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
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a white flower (d) yeast
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
5. 5.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
6. 6.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a flower stem
7. 7.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
9. 9.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a glass of water (d) a balloon
12. 12.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) food colour (d) a battery cell
14. 14.True or false: a steel spoon lets water climb up it. (a) True (b) False
15. 15.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a cotton thread
17. 17.⚖️ 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 measure it (b) we keep it the same (c) we change it
18. 18.🧺 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 balloon (d) a white flower
19. 19.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
24. 24.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a paper towel (d) a plastic ruler
25. 25.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a plastic ruler (d) a paper towel
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
27. 27.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a flower stem does not let water climb. (a) True (b) False
29. 29.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.⚖️ 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 room it stands in (b) the length of the stem (c) the kind of flower (d) time for colour to show
32. 32.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
33. 33.⚖️ 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 room it stands in (c) time for colour to show
34. 34.⚖️ 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
35. 35.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a few hours of waiting (d) food colour
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a cotton thread (d) a steel spoon
38. 38.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of colour
39. 39.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a white flower (d) a glass of water

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