Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 102 · 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 steel spoon lets water climb up it. (a) False (b) True
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
4. 4.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a piece of foil
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a paper towel (d) a sugar cube
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
7. 7.True or false: a steel spoon does not let water climb. (a) True (b) False
8. 8.🧺 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 mirror (d) a white flower
9. 9.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
10. 10.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a piece of chalk (d) a rubber eraser
11. 11.True or false: a flower stem lets water climb up it. (a) True (b) False
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a few hours of waiting (d) a glass of water
13. 13.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) a white flower
16. 16.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of chalk (c) a glass marble (d) a steel spoon
17. 17.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
19. 19.⚖️ 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 amount of water (b) the kind of flower (c) the length of the stem (d) the room it stands in
20. 20.⚖️ 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) the kind of flower (c) time for colour to show (d) the room it stands in
21. 21.True or false: a flower stem does not let water climb. (a) True (b) False
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
24. 24.True or false: a piece of chalk does not let water climb. (a) True (b) False
25. 25.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a sugar cube (d) a piece of chalk
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
28. 28.⚖️ 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 measure it (c) we change it
29. 29.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
30. 30.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a sugar cube (d) a steel spoon
32. 32.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
33. 33.💧 Dip a flower stem 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 cotton thread does not let water climb. (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 magnet (c) a few hours of waiting (d) food colour
36. 36.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a balloon (d) food colour
40. 40.True or false: a rubber eraser lets water climb up it. (a) False (b) True

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