Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 66 · 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 petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a mirror
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
4. 4.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.⚖️ 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
7. 7.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a flower stem
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) turmeric powder
10. 10.True or false: a glass marble does not let water climb. (a) True (b) False
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.⚖️ 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 kind of flower (c) time for colour to show (d) the amount of colour
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) True (b) False
14. 14.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) turmeric powder
16. 16.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a glass marble (d) a steel spoon
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
19. 19.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a paper towel
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
22. 22.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a magnet (d) a balloon
24. 24.True or false: a piece of foil lets water climb up it. (a) True (b) False
25. 25.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a rubber eraser
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
29. 29.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
30. 30.True or false: a sugar cube lets water climb up it. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
32. 32.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
33. 33.🧺 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 few hours of waiting (d) a magnet
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a balloon (d) a magnet
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
37. 37.⚖️ 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 colour (b) time for colour to show (c) the amount of water (d) the length of the stem
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) turmeric powder (d) yeast
39. 39.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a sugar cube (d) a strip of cloth
40. 40.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed

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