Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 27 · 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 mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a steel spoon (d) a glass marble
3. 3.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
4. 4.True or false: a paper towel lets water climb up it. (a) False (b) True
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
6. 6.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🧺 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 balloon (d) a few hours of waiting
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) yeast
10. 10.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a paper towel (d) a glass marble
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) food colour (d) a few hours of waiting
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a battery cell
18. 18.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
19. 19.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ 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 kept the same. (a) False (b) True
22. 22.⚖️ 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) True (b) False
23. 23.⚖️ 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) the amount of water (c) time for colour to show
24. 24.True or false: a sugar cube lets water climb up it. (a) False (b) True
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a white flower (d) food colour
26. 26.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
27. 27.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a few hours of waiting (d) a glass of water
29. 29.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
30. 30.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of foil (c) a piece of chalk (d) a paper towel
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 kept the same. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) turmeric powder
33. 33.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a balloon (d) a white flower
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a battery cell
36. 36.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a battery cell (d) a magnet
38. 38.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a glass marble (d) a rubber eraser
39. 39.⚖️ 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) time for colour to show (c) the amount of water (d) the room it stands in
40. 40.💧 Which of these lets water climb up it? (a) a cotton thread (b) a rubber eraser (c) a steel spoon (d) a plastic ruler

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