Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 30 · 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.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
2. 2.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a white flower (d) a glass of water
4. 4.🔮 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 turn two colours (c) they stay white (d) they fall off at once
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) a few hours of waiting
7. 7.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) yeast (d) a glass of water
11. 11.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
13. 13.🧺 Do we need a glass of water 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.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.💧 Dip a paper towel 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 paper towel lets water climb up it. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a flower stem (d) a rubber eraser
20. 20.True or false: a paper towel does not let water climb. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a cotton thread
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
23. 23.True or false: a glass marble does not let water climb. (a) False (b) True
24. 24.True or false: a steel spoon lets water climb up it. (a) False (b) True
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a glass marble (d) a plastic ruler
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
27. 27.True or false: a steel spoon does not let water climb. (a) True (b) False
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a few hours of waiting (d) food colour
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a paper towel
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
35. 35.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the amount of water
37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a plastic ruler
38. 38.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
40. 40.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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