Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 526 · 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? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 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) yeast
4. 4.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
5. 5.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) turmeric powder (d) a few hours of waiting
7. 7.⚖️ 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
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) a steel spoon
10. 10.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a strip of cloth (d) a sugar cube
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) food colour (d) yeast
12. 12.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a balloon (d) a glass of water
14. 14.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
15. 15.True or false: a plastic ruler does not let water climb. (a) True (b) False
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a glass marble
18. 18.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
19. 19.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
21. 21.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a paper towel (d) a sugar cube
23. 23.True or false: a sugar cube does not let water climb. (a) True (b) False
24. 24.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
25. 25.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
26. 26.True or false: a paper towel does not let water climb. (a) False (b) True
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) food colour (d) a few hours of waiting
28. 28.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
29. 29.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of colour
31. 31.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a strip of cloth
32. 32.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
33. 33.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a piece of foil
35. 35.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
36. 36.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
38. 38.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a cotton thread lets water climb up it. (a) False (b) True
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a glass of water (d) a few hours of waiting

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