Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 385 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) False (b) True
2. 2.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
4. 4.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
5. 5.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.💧 Which of these lets water climb up it? (a) a sugar cube (b) a piece of foil (c) a rubber eraser (d) a plastic ruler
8. 8.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a glass marble (d) a flower stem
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
13. 13.True or false: a paper towel lets water climb up it. (a) False (b) True
14. 14.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a white flower (d) a glass of water
19. 19.⚖️ 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
20. 20.True or false: a glass marble lets water climb up it. (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) turmeric powder (c) a glass of water (d) a few hours of waiting
22. 22.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a paper towel
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
25. 25.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
27. 27.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.True or false: a sugar cube lets water climb up it. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a steel spoon (d) a piece of chalk
36. 36.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
37. 37.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a mirror (d) a few hours of waiting
39. 39.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a cotton thread
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot

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