Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 908 · 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 is the odd one out? (a) a piece of foil (b) a cotton thread (c) a rubber eraser (d) a steel spoon
2. 2.⚖️ 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) the length of the stem (c) time for colour to show (d) the amount of colour
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) food colour (d) a few hours of waiting
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) a white flower
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a cotton thread
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
7. 7.True or false: a rubber eraser does not let water climb. (a) False (b) True
8. 8.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
10. 10.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
11. 11.🔮 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
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a paper towel (d) a steel spoon
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a few hours of waiting (d) a glass of water
16. 16.⚖️ 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
17. 17.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
18. 18.⚖️ 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 what we measure. (a) False (b) True
19. 19.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a magnet (d) yeast
21. 21.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a piece of chalk (d) a glass marble
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
24. 24.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) yeast
26. 26.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a piece of foil does not let water climb. (a) False (b) True
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a few hours of waiting (d) a battery cell
29. 29.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
30. 30.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a piece of chalk (d) a plastic ruler
31. 31.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
32. 32.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.True or false: a strip of cloth does not let water climb. (a) False (b) True
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a balloon (d) a mirror
38. 38.True or false: a steel spoon lets water climb up it. (a) True (b) False
39. 39.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
40. 40.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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