Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 372 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a few hours of waiting (d) a balloon
3. 3.🧺 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) a white flower (d) yeast
4. 4.⚖️ 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
5. 5.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a flower stem (d) a strip of cloth
6. 6.True or false: a steel spoon does not let water climb. (a) False (b) True
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
8. 8.True or false: a piece of foil lets water climb up it. (a) True (b) False
9. 9.🧺 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 mirror (d) food colour
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a balloon (d) a magnet
11. 11.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a flower stem (d) a cotton thread
12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a paper towel (d) a flower stem
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.⚖️ 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) time for colour to show (d) the length of the stem
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) turmeric powder (d) yeast
20. 20.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
21. 21.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a glass marble (d) a sugar cube
22. 22.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
23. 23.True or false: a rubber eraser lets water climb up it. (a) False (b) True
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a balloon
25. 25.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
27. 27.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
28. 28.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of colour
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
31. 31.🛟 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
32. 32.True or false: a paper towel does not let water climb. (a) True (b) False
33. 33.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a plastic ruler (d) a piece of chalk
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ 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 measure it (c) we change it
37. 37.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
39. 39.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a balloon (d) a glass of water

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