Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 96 · 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.⚖️ 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) time for colour to show (c) the length of the stem (d) the room it stands in
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
3. 3.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.True or false: a piece of chalk lets water climb up it. (a) True (b) False
5. 5.True or false: a steel spoon lets water climb up it. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a cotton thread (d) a strip of cloth
7. 7.🔮 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a few hours of waiting (d) a glass of water
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a cotton thread (d) a paper towel
12. 12.⚖️ 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 room it stands in (c) time for colour to show
13. 13.True or false: a cotton thread does not let water climb. (a) False (b) True
14. 14.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
15. 15.⚖️ 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 keep it the same (b) we measure it (c) we change it
16. 16.🧺 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 mirror (d) food colour
17. 17.True or false: a flower stem lets water climb up it. (a) True (b) False
18. 18.True or false: a rubber eraser does not let water climb. (a) True (b) False
19. 19.True or false: a rubber eraser lets water climb up it. (a) False (b) True
20. 20.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
21. 21.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Which of these lets water climb up it? (a) a sugar cube (b) a steel spoon (c) a glass marble (d) a rubber eraser
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a balloon (d) yeast
25. 25.⚖️ 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 amount of water (c) time for colour to show
26. 26.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a steel spoon (d) a paper towel
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
28. 28.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
29. 29.🔮 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 stay white (c) they all turn green (d) they turn two colours
30. 30.🧺 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
31. 31.⚖️ 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) True (b) False
32. 32.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a glass marble (d) a piece of foil
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a glass of water (d) food colour
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a balloon (d) a glass of water
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.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a battery cell (d) a balloon
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a piece of foil

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