Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 156 · 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.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.True or false: a strip of cloth lets water climb up it. (a) True (b) False
5. 5.⚖️ 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) time for colour to show (c) the kind of flower (d) the amount of water
6. 6.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
7. 7.🧺 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) yeast
8. 8.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
9. 9.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
10. 10.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
12. 12.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a steel spoon
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
17. 17.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
19. 19.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
20. 20.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a glass marble (d) a rubber eraser
21. 21.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a rubber eraser
22. 22.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a cotton thread (d) a paper towel
24. 24.True or false: a piece of chalk does not let water climb. (a) True (b) False
25. 25.🧺 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) a battery cell
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) turmeric powder (d) a white flower
27. 27.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.True or false: a piece of foil lets water climb up it. (a) True (b) False
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
31. 31.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 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 white flower
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
36. 36.True or false: a glass marble lets water climb up it. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a cotton thread (d) a strip of cloth
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a glass of water (d) a magnet
39. 39.⚖️ 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
40. 40.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True

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