Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 476 · 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 do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
2. 2.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
4. 4.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
6. 6.True or false: a paper towel does not let water climb. (a) False (b) True
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.🧺 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) yeast (d) a white flower
9. 9.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
10. 10.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
11. 11.💧 Which of these does not let water climb? (a) a rubber eraser (b) a strip of cloth (c) a piece of chalk (d) a paper towel
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a balloon (d) a white flower
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) yeast (d) a white flower
14. 14.True or false: a sugar cube lets water climb up it. (a) True (b) False
15. 15.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a sugar cube (d) a steel spoon
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) a white flower
17. 17.⚖️ 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
18. 18.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a piece of foil (d) a paper towel
19. 19.True or false: a glass marble does not let water climb. (a) True (b) False
20. 20.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
21. 21.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.⚖️ 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 water (b) the length of the stem (c) the room it stands in (d) time for colour to show
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.⚖️ 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 what we measure. (a) True (b) False
25. 25.🌼 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
26. 26.⚖️ 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) time for colour to show (c) the kind of flower
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
28. 28.🧺 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) a white flower (d) a battery cell
29. 29.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
30. 30.🌼 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
31. 31.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
32. 32.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
33. 33.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) False (b) True
35. 35.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a flower stem does not let water climb. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a steel spoon (d) a plastic ruler
38. 38.True or false: a strip of cloth lets water climb up it. (a) True (b) False
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a cotton thread (d) a piece of foil

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