Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 193 · 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.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) turmeric powder (d) a balloon
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 fall off at once (b) they all turn green (c) they stay white (d) they turn two colours
4. 4.⚖️ 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
5. 5.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a flower stem
8. 8.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
9. 9.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
11. 11.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a piece of chalk (d) a plastic ruler
13. 13.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
14. 14.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
15. 15.🧺 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) food colour (d) a balloon
16. 16.True or false: a piece of chalk does not let water climb. (a) False (b) True
17. 17.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
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 battery cell (d) a white flower
19. 19.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.⚖️ 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) True (b) False
21. 21.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a piece of chalk (d) a piece of foil
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a balloon
23. 23.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a piece of chalk (d) a piece of foil
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.True or false: a plastic ruler lets water climb up it. (a) False (b) True
26. 26.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
28. 28.True or false: a flower stem lets water climb up it. (a) True (b) False
29. 29.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a glass of water
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 amount of colour (b) time for colour to show (c) the amount of water (d) the length of the stem
32. 32.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
34. 34.True or false: a cotton thread does not let water climb. (a) False (b) True
35. 35.⚖️ 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
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 the one thing we change. (a) False (b) True
37. 37.True or false: a piece of chalk lets water climb up it. (a) True (b) False
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) turmeric powder (d) a balloon
39. 39.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
40. 40.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue

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