Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 320 · 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 is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) yeast
2. 2.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a rubber eraser (d) a piece of chalk
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
8. 8.True or false: a flower stem lets water climb up it. (a) True (b) False
9. 9.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a strip of cloth (d) a plastic ruler
10. 10.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a strip of cloth (d) a steel spoon
11. 11.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) turmeric powder (d) a glass of water
14. 14.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a sugar cube (d) a plastic ruler
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a balloon (d) a few hours of waiting
18. 18.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
19. 19.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
20. 20.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a magnet
22. 22.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
23. 23.True or false: a cotton thread does not let water climb. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a piece of chalk (d) a steel spoon
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
26. 26.🧺 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 mirror (d) food colour
27. 27.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a sugar cube (d) a plastic ruler
29. 29.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
31. 31.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a flower stem does not let water climb. (a) True (b) False
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a mirror (d) food colour
34. 34.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) capillary action (d) evaporation
35. 35.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a cotton thread (d) a piece of foil
36. 36.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
37. 37.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
39. 39.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a battery cell

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