Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 930 · 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 lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a piece of foil (d) a glass marble
2. 2.🧺 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) yeast (d) food colour
3. 3.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a few hours of waiting (d) food colour
6. 6.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
8. 8.🧺 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 magnet (d) food colour
9. 9.🧺 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) food colour (d) a balloon
10. 10.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
11. 11.⚖️ 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
12. 12.True or false: a flower stem does not let water climb. (a) True (b) False
13. 13.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
15. 15.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a white flower (d) a glass of water
17. 17.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
18. 18.⚖️ 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) time for colour to show (b) the length of the stem (c) the amount of colour (d) the room it stands in
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
21. 21.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
23. 23.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a piece of chalk (d) a steel spoon
25. 25.🔮 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
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a magnet
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
29. 29.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
30. 30.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.True or false: a plastic ruler lets water climb up it. (a) False (b) True
32. 32.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a paper towel
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) food colour (d) a few hours of waiting
36. 36.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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
38. 38.💧 Which of these does not let water climb? (a) a flower stem (b) a glass marble (c) a sugar cube (d) a cotton thread
39. 39.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
40. 40.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False

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