Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 468 · 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 is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a glass of water (d) a few hours of waiting
3. 3.⚖️ 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
4. 4.⚖️ 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 room it stands in (b) time for colour to show (c) the amount of water (d) the amount of colour
5. 5.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a sugar cube (d) a piece of foil
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
8. 8.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a paper towel lets water climb up it. (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 white flower (c) a balloon (d) food colour
11. 11.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
12. 12.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a sugar cube (d) a rubber eraser
15. 15.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
16. 16.⚖️ 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 room it stands in (d) the length of the stem
17. 17.True or false: a plastic ruler lets water climb up it. (a) False (b) True
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) food colour
20. 20.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) a glass of water
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) False (b) True
24. 24.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a sugar cube (d) a paper towel
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) yeast (d) a white flower
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a white flower (d) food colour
28. 28.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a glass marble
29. 29.⚖️ 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
30. 30.⚖️ 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) False (b) True
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
32. 32.⚖️ 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
33. 33.True or false: a piece of foil does not let water climb. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a glass marble (d) a cotton thread
35. 35.🧺 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 few hours of waiting (d) a magnet
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
39. 39.True or false: a flower stem lets water climb up it. (a) True (b) False
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False

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