Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 110 · 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.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a balloon (d) food colour
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
7. 7.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a paper towel (d) a rubber eraser
8. 8.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a piece of chalk
9. 9.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a plastic ruler (d) a piece of foil
10. 10.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) food colour (d) a white flower
13. 13.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
14. 14.True or false: a sugar cube does not let water climb. (a) False (b) True
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
16. 16.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a mirror (d) a glass of water
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a magnet (d) a few hours of waiting
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a magnet (d) a balloon
20. 20.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a piece of chalk (d) a strip of cloth
21. 21.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a paper towel (d) a piece of foil
22. 22.True or false: a flower stem lets water climb up it. (a) False (b) True
23. 23.⚖️ 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
24. 24.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a plastic ruler (d) a glass marble
25. 25.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) a few hours of waiting
27. 27.True or false: a steel spoon lets water climb up it. (a) False (b) True
28. 28.⚖️ 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) time for colour to show (c) the amount of water (d) the length of the stem
29. 29.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a piece of chalk lets water climb up it. (a) True (b) False
32. 32.🛟 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
33. 33.🧺 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
34. 34.True or false: a glass marble lets water climb up it. (a) True (b) False
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a flower stem (d) a rubber eraser
37. 37.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the room it stands in (c) the length of the stem
39. 39.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
40. 40.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem

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