Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 880 · 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.🧺 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
2. 2.⚖️ 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 measure it (c) we change it
3. 3.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a piece of chalk
6. 6.🔍 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
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
8. 8.🔮 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 fall off at once (c) they turn two colours (d) they stay white
9. 9.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the length of the stem (d) the amount of colour
11. 11.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
13. 13.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
14. 14.True or false: a plastic ruler lets water climb up it. (a) True (b) False
15. 15.⚖️ 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
16. 16.True or false: a sugar cube lets water climb up it. (a) False (b) True
17. 17.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
18. 18.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a balloon
20. 20.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
21. 21.🧺 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) a glass of water (d) a balloon
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a glass of water (d) a few hours of waiting
23. 23.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a paper towel (d) a plastic ruler
26. 26.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
27. 27.True or false: a paper towel lets water climb up it. (a) True (b) False
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a few hours of waiting
31. 31.⚖️ 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
32. 32.True or false: a flower stem does not let water climb. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a cotton thread (d) a piece of chalk
34. 34.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a piece of chalk lets water climb up it. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a flower stem (d) a sugar cube
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a mirror (d) a balloon
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a white flower (d) a few hours of waiting
39. 39.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
40. 40.True or false: a rubber eraser lets water climb up it. (a) False (b) True

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