Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 990 · 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 amount of water”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.True or false: a cotton thread does not let water climb. (a) False (b) True
3. 3.⚖️ 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 kind of flower (c) time for colour to show
4. 4.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a rubber eraser (d) a steel spoon
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a piece of foil (d) a plastic ruler
6. 6.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a glass marble (d) a sugar cube
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a balloon (d) food colour
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
9. 9.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.True or false: a rubber eraser lets water climb up it. (a) True (b) False
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a battery cell (d) a glass of water
13. 13.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a rubber eraser
14. 14.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a piece of foil (d) a sugar cube
15. 15.True or false: a piece of foil does not let water climb. (a) False (b) True
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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) time for colour to show (c) the room it stands in
19. 19.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
20. 20.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
25. 25.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) turmeric powder
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a steel spoon (d) a cotton thread
30. 30.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
31. 31.True or false: a glass marble does not let water climb. (a) False (b) True
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a mirror (d) a glass of water
33. 33.⚖️ 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 length of the stem (b) the kind of flower (c) the room it stands in (d) the amount of colour
34. 34.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) yeast
36. 36.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a flower stem (d) a steel spoon
37. 37.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a piece of chalk (d) a rubber eraser
38. 38.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a cotton thread (d) a steel spoon
40. 40.🌼 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

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