Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 122 · 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.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a strip of cloth
2. 2.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
3. 3.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the amount of water
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a few hours of waiting (d) a white flower
5. 5.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show (d) the amount of colour
6. 6.⚖️ 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 what we measure. (a) True (b) False
7. 7.🔮 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 fall off at once (d) they stay white
8. 8.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 change it (c) we measure it
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a white flower (d) food colour
11. 11.🧺 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 white flower (d) a battery cell
12. 12.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
13. 13.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.True or false: a flower stem does not let water climb. (a) False (b) True
15. 15.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
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 water”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) food colour (d) a white flower
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a sugar cube
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) yeast (d) a few hours of waiting
23. 23.⚖️ 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) True (b) False
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
25. 25.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a steel spoon (d) a sugar cube
26. 26.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a strip of cloth (d) a rubber eraser
27. 27.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a flower stem (d) a glass marble
28. 28.True or false: a piece of chalk does not let water climb. (a) True (b) False
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) food colour
30. 30.True or false: a paper towel lets water climb up it. (a) False (b) True
31. 31.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) turmeric powder
34. 34.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.True or false: a flower stem lets water climb up it. (a) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a white flower (d) yeast
40. 40.💧 Which of these does not let water climb? (a) a flower stem (b) a glass marble (c) a cotton thread (d) a piece of chalk

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