Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 257 · 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.True or false: a paper towel lets water climb up it. (a) False (b) True
2. 2.🌼 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
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) a white flower (d) food colour
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a balloon (d) a magnet
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.True or false: a flower stem does not let water climb. (a) True (b) False
9. 9.🛟 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
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) turmeric powder (d) a balloon
11. 11.True or false: a steel spoon does not let water climb. (a) False (b) True
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) turmeric powder (d) a magnet
13. 13.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a mirror (d) a few hours of waiting
15. 15.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: a piece of chalk does not let water climb. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
18. 18.True or false: a plastic ruler lets water climb up it. (a) True (b) False
19. 19.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
24. 24.True or false: a rubber eraser does not let water climb. (a) False (b) True
25. 25.True or false: a piece of foil does not let water climb. (a) False (b) True
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
30. 30.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
31. 31.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a piece of chalk (d) a paper towel
33. 33.⚖️ 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) True (b) False
34. 34.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
35. 35.True or false: a plastic ruler does not let water climb. (a) False (b) True
36. 36.⚖️ 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
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
38. 38.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
39. 39.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed

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