Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 220 · 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.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a glass marble (d) a rubber eraser
3. 3.🔍 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 flower floats away (d) the stem turns to ice
4. 4.True or false: a steel spoon lets water climb up it. (a) True (b) False
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a rubber eraser (d) a piece of foil
6. 6.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a piece of chalk
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a mirror (d) a few hours of waiting
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) yeast (d) a balloon
9. 9.⚖️ 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) time for colour to show (c) the amount of water (d) the length of the stem
10. 10.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
13. 13.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
16. 16.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a white flower (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a sugar cube (d) a piece of chalk
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a rubber eraser (d) a piece of foil
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a white flower (d) a battery cell
23. 23.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.⚖️ 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
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
26. 26.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
27. 27.True or false: a glass marble lets water climb up it. (a) False (b) True
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
29. 29.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a steel spoon
30. 30.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
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 keep it the same (b) we change it (c) we measure it
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a glass of water (d) a white flower
35. 35.⚖️ 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
36. 36.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
37. 37.🔮 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
38. 38.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a glass of water (d) yeast
40. 40.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True

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