Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 850 · 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.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
3. 3.⚖️ 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 room it stands in
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a white flower (d) a few hours of waiting
5. 5.⚖️ 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 kept the same. (a) True (b) False
6. 6.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
7. 7.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a strip of cloth
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) food colour (d) a balloon
11. 11.True or false: a piece of foil lets water climb up it. (a) True (b) False
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
13. 13.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
14. 14.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
15. 15.⚖️ 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 kept the same. (a) False (b) True
16. 16.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the kind of flower
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a magnet
19. 19.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
20. 20.⚖️ 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
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
22. 22.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
25. 25.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a paper towel (d) a cotton thread
26. 26.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
27. 27.🧺 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) yeast (d) food colour
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) yeast (d) a balloon
29. 29.🔮 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 all turn green (c) they fall off at once (d) they stay white
30. 30.True or false: a strip of cloth does not let water climb. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a plastic ruler
32. 32.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
35. 35.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a plastic ruler (d) a rubber eraser
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a battery cell
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 water”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a strip of cloth
39. 39.⚖️ 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
40. 40.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False

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