Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 118 · 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 does not let water climb? (a) a piece of chalk (b) a flower stem (c) a strip of cloth (d) a steel spoon
2. 2.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a rubber eraser (d) a flower stem
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
4. 4.🧺 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 magnet (d) food colour
5. 5.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
7. 7.True or false: a sugar cube lets water climb up it. (a) True (b) False
8. 8.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a steel spoon lets water climb up it. (a) False (b) True
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) food colour
13. 13.True or false: a plastic ruler lets water climb up it. (a) False (b) True
14. 14.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a sugar cube (d) a strip of cloth
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) yeast
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 amount of colour (b) the length of the stem (c) time for colour to show (d) the kind of flower
18. 18.⚖️ 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 measure it (c) we change it
19. 19.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
21. 21.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
22. 22.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a battery cell (d) a few hours of waiting
24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
25. 25.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a plastic ruler (d) a strip of cloth
26. 26.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a paper towel (d) a steel spoon
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a balloon
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
34. 34.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a cotton thread (d) a glass marble
35. 35.True or false: a cotton thread lets water climb up it. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a rubber eraser (d) a piece of chalk
37. 37.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
39. 39.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
40. 40.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes

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