Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 868 · 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 flower glows (c) no colour change (d) the petals turn red
2. 2.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
3. 3.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a rubber eraser (d) a cotton thread
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a few hours of waiting (d) food colour
8. 8.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a glass marble (d) a piece of foil
9. 9.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
11. 11.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
12. 12.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
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 colour (b) the kind of flower (c) the amount of water (d) time for colour to show
18. 18.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a plastic ruler (d) a flower stem
20. 20.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a few hours of waiting (d) a white flower
22. 22.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a mirror (d) a few hours of waiting
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) a white flower
27. 27.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) turmeric powder (d) a glass of water
30. 30.True or false: a piece of foil lets water climb up it. (a) False (b) True
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
32. 32.💧 Which of these does not let water climb? (a) a glass marble (b) a piece of chalk (c) a strip of cloth (d) a cotton thread
33. 33.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
35. 35.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
36. 36.🔮 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 stay white (c) they fall off at once (d) they all turn green
37. 37.⚖️ 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 change it (c) we keep it the same
38. 38.True or false: a cotton thread does not let water climb. (a) False (b) True
39. 39.⚖️ 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 keep it the same (c) we change it
40. 40.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True

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