Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 647 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
2. 2.True or false: a rubber eraser lets water climb up it. (a) False (b) True
3. 3.True or false: a sugar cube does not let water climb. (a) True (b) False
4. 4.True or false: a paper towel lets water climb up it. (a) False (b) True
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a few hours of waiting (d) food colour
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
7. 7.⚖️ 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 amount of water (c) the room it stands in (d) time for colour to show
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a rubber eraser
11. 11.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a battery cell (d) yeast
13. 13.⚖️ 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
14. 14.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
17. 17.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the length of the stem (d) the amount of water
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
21. 21.True or false: a glass marble does not let water climb. (a) False (b) True
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a battery cell (d) food colour
23. 23.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a cotton thread
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a glass of water (d) a mirror
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
28. 28.⚖️ 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
29. 29.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
31. 31.🔍 Which is the odd one out? (a) a flower stem (b) a glass marble (c) a sugar cube (d) a paper towel
32. 32.⚖️ 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 change it (c) we measure it
33. 33.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.True or false: a flower stem does not let water climb. (a) False (b) True
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a flower stem (d) a cotton thread
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
40. 40.🛟 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

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