Capillary Action Flower Experiment Worksheet

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

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