Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 450 · 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.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
2. 2.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
4. 4.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🔮 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 stay white (d) they fall off at once
6. 6.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
9. 9.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a piece of chalk
11. 11.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
14. 14.⚖️ 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 the one thing we change. (a) False (b) True
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a flower stem (d) a piece of chalk
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a strip of cloth (d) a piece of chalk
19. 19.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a white flower (d) yeast
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) turmeric powder
23. 23.🔮 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
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a white flower (d) food colour
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a cotton thread
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
29. 29.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a cotton thread (d) a paper towel
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a magnet
31. 31.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the kind of flower
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a few hours of waiting (d) food colour
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) a white flower
34. 34.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a few hours of waiting
36. 36.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
37. 37.True or false: a piece of foil does not let water climb. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
40. 40.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed

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