Capillary Action Flower Experiment Worksheet

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

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