Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 13 · 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 needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a battery cell (d) a balloon
2. 2.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
3. 3.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
4. 4.🔍 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 stem turns to ice (d) the flower floats away
5. 5.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) a glass of water
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a balloon (d) yeast
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
10. 10.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
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 the one thing we change. (a) True (b) False
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a plastic ruler
14. 14.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a rubber eraser (d) a glass marble
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 amount of water (b) the room it stands in (c) the kind of flower (d) the length of the stem
17. 17.🧺 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 few hours of waiting (d) turmeric powder
18. 18.🧺 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
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a balloon (d) a magnet
20. 20.🧺 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) a battery cell (d) a few hours of waiting
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a rubber eraser
22. 22.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a strip of cloth (d) a rubber eraser
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a cotton thread does not let water climb. (a) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) yeast
27. 27.⚖️ 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) False (b) True
28. 28.True or false: a rubber eraser lets water climb up it. (a) False (b) True
29. 29.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
30. 30.⚖️ 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 kind of flower (d) time for colour to show
31. 31.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a glass marble
34. 34.⚖️ 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
35. 35.🧺 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 magnet (d) a glass of water
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
37. 37.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
38. 38.True or false: a flower stem lets water climb up it. (a) False (b) True
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
40. 40.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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