Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 401 · 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 piece of foil lets water climb up it. (a) True (b) False
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
3. 3.🔮 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 fall off at once (c) they turn two colours (d) they all turn green
4. 4.True or false: a sugar cube lets water climb up it. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
6. 6.🧺 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 white flower (d) a mirror
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the kind of flower (c) time for colour to show
9. 9.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
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 balloon (c) a glass of water (d) food colour
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
13. 13.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
15. 15.⚖️ 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) True (b) False
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
20. 20.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of chalk (d) a rubber eraser
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
22. 22.⚖️ 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
23. 23.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
24. 24.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
26. 26.⚖️ 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 colour (b) the room it stands in (c) the length of the stem (d) the kind of flower
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a rubber eraser
29. 29.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
31. 31.True or false: a flower stem lets water climb up it. (a) False (b) True
32. 32.True or false: a cotton thread does not let water climb. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a steel spoon (d) a flower stem
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a magnet (d) a battery cell
35. 35.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
36. 36.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a few hours of waiting (d) a glass of water
38. 38.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
40. 40.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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