Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 739 · 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? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a balloon (d) a battery cell
3. 3.⚖️ 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) time for colour to show (b) the room it stands in (c) the length of the stem (d) the kind of flower
4. 4.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a paper towel
6. 6.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a piece of chalk (d) a piece of foil
8. 8.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
9. 9.🌼 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
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) food colour
11. 11.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a plastic ruler (d) a flower stem
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a balloon (d) a few hours of waiting
14. 14.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a glass marble (d) a steel spoon
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) a mirror
18. 18.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) food colour (d) a few hours of waiting
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) turmeric powder (d) a magnet
21. 21.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a steel spoon (d) a piece of chalk
24. 24.True or false: a piece of chalk lets water climb up it. (a) True (b) False
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a white flower (d) yeast
26. 26.🔮 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
27. 27.🛟 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
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) a glass of water
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a white flower (d) a few hours of waiting
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
34. 34.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
35. 35.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
36. 36.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
37. 37.True or false: a flower stem lets water climb up it. (a) True (b) False
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a few hours of waiting
39. 39.True or false: a glass marble does not let water climb. (a) True (b) False
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed

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