Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 242 · 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 piece of foil (b) a strip of cloth (c) a plastic ruler (d) a steel spoon
2. 2.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a flower stem
3. 3.True or false: a piece of chalk does not let water climb. (a) False (b) True
4. 4.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
5. 5.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a steel spoon (d) a piece of foil
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a battery cell (d) food colour
10. 10.⚖️ 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 kind of flower (b) the amount of water (c) the length of the stem (d) time for colour to show
11. 11.True or false: a paper towel does not let water climb. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a strip of cloth
13. 13.True or false: a cotton thread lets water climb up it. (a) True (b) False
14. 14.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
15. 15.⚖️ 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 kind of flower (d) the amount of colour
16. 16.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
18. 18.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a steel spoon (d) a piece of chalk
19. 19.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.💧 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 cotton thread
22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
24. 24.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
26. 26.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a magnet (d) a few hours of waiting
28. 28.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
30. 30.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a paper towel (d) a strip of cloth
31. 31.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
32. 32.True or false: a piece of foil lets water climb up it. (a) False (b) True
33. 33.🧺 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
34. 34.True or false: a steel spoon lets water climb up it. (a) True (b) False
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) turmeric powder
36. 36.⚖️ 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) False (b) True
37. 37.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
38. 38.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
40. 40.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking

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