Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 125 · 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.⚖️ 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 keep it the same (c) we change it
2. 2.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
3. 3.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
4. 4.⚖️ 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 water (c) the length of the stem (d) the amount of colour
5. 5.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a cotton thread
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) time for colour to show (c) the length of the stem
9. 9.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
10. 10.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
11. 11.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a flower stem (d) a piece of chalk
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) a white flower
13. 13.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
14. 14.True or false: a piece of chalk does not let water climb. (a) False (b) True
15. 15.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a cotton thread (d) a flower stem
18. 18.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
19. 19.⚖️ 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 measure it (b) we change it (c) we keep it the same
20. 20.🌼 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
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a few hours of waiting (d) a balloon
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a mirror (d) a battery cell
25. 25.⚖️ 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 the one thing we change. (a) False (b) True
26. 26.💧 Which of these lets water climb up it? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a rubber eraser
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 the one thing we change. (a) True (b) False
28. 28.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
30. 30.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
31. 31.True or false: a steel spoon lets water climb up it. (a) True (b) False
32. 32.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a steel spoon (d) a cotton thread
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a few hours of waiting (d) a glass of water
34. 34.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a few hours of waiting (d) a white flower
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
37. 37.🧺 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 balloon (d) a white flower
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a piece of foil
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a piece of chalk
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a paper towel

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