Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 28 · 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) needed (b) not needed
2. 2.True or false: a flower stem does not let water climb. (a) False (b) True
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
5. 5.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a piece of chalk (d) a glass marble
7. 7.⚖️ 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 kind of flower (c) the amount of colour (d) the room it stands in
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
9. 9.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.True or false: a strip of cloth lets water climb up it. (a) False (b) True
11. 11.True or false: a piece of foil does not let water climb. (a) False (b) True
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) turmeric powder (d) a glass of water
13. 13.True or false: a rubber eraser lets water climb up it. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a flower stem (d) a plastic ruler
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a magnet
16. 16.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a few hours of waiting (d) a glass of water
18. 18.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🛟 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
22. 22.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
23. 23.💧 Which of these lets water climb up it? (a) a piece of foil (b) a piece of chalk (c) a rubber eraser (d) a plastic ruler
24. 24.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a strip of cloth
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a balloon (d) turmeric powder
27. 27.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a few hours of waiting (d) a white flower
31. 31.⚖️ 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) False (b) True
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
33. 33.🔮 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
34. 34.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
35. 35.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a paper towel (c) a steel spoon (d) a plastic ruler
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) yeast
37. 37.⚖️ 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
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a rubber eraser
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic

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