Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 34 · 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 sugar cube (b) a cotton thread (c) a steel spoon (d) a strip of cloth
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
3. 3.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a paper towel (d) a flower stem
5. 5.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
8. 8.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a piece of chalk (d) a rubber eraser
9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
10. 10.🧺 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 glass of water (d) a mirror
11. 11.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.True or false: a rubber eraser does not let water climb. (a) False (b) True
13. 13.⚖️ 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) False (b) True
14. 14.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
15. 15.⚖️ 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
16. 16.⚖️ 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 room it stands in (b) the kind of flower (c) the amount of water (d) time for colour to show
17. 17.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a piece of foil
18. 18.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
19. 19.⚖️ 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 kept the same. (a) False (b) True
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
21. 21.True or false: a piece of chalk lets water climb up it. (a) True (b) False
22. 22.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
23. 23.⚖️ 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
24. 24.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.⚖️ 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
26. 26.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
28. 28.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) food colour
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a glass of water
33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
35. 35.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.⚖️ 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 colour (c) the room it stands in (d) time for colour to show
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) a white flower

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