Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 940 · 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 is the odd one out? (a) a steel spoon (b) a flower stem (c) a strip of cloth (d) a cotton thread
2. 2.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) yeast (d) turmeric powder
4. 4.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
5. 5.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) yeast
8. 8.⚖️ 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 amount of colour (b) the length of the stem (c) the kind of flower (d) the room it stands in
9. 9.🧺 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
10. 10.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a strip of cloth
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
12. 12.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.⚖️ 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
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a few hours of waiting (d) a glass of water
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a cotton thread (d) a strip of cloth
18. 18.True or false: a rubber eraser lets water climb up it. (a) False (b) True
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a mirror (d) a few hours of waiting
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a white flower (d) a magnet
24. 24.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
25. 25.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a piece of foil (d) a glass marble
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a few hours of waiting (d) a glass of water
27. 27.True or false: a flower stem does not let water climb. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a piece of chalk
29. 29.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 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
31. 31.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
33. 33.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
34. 34.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the amount of colour
35. 35.True or false: a steel spoon lets water climb up it. (a) False (b) True
36. 36.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
37. 37.True or false: a piece of foil does not let water climb. (a) True (b) False
38. 38.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
39. 39.True or false: a sugar cube lets water climb up it. (a) False (b) True
40. 40.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a cotton thread (d) a paper towel

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