Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 527 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) food colour (d) a glass of water
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a mirror
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
6. 6.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
7. 7.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
8. 8.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
9. 9.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a steel spoon (d) a piece of foil
10. 10.True or false: a rubber eraser does not let water climb. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a strip of cloth
12. 12.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a plastic ruler (d) a strip of cloth
13. 13.True or false: a piece of chalk does not let water climb. (a) False (b) True
14. 14.⚖️ 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
15. 15.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a piece of foil (d) a strip of cloth
16. 16.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
17. 17.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a rubber eraser (d) a paper towel
18. 18.💧 Which of these does not let water climb? (a) a steel spoon (b) a paper towel (c) a flower stem (d) a sugar cube
19. 19.True or false: a cotton thread lets water climb up it. (a) False (b) True
20. 20.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ 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
22. 22.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a plastic ruler
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
24. 24.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a glass marble (d) a rubber eraser
25. 25.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a sugar cube (d) a steel spoon
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
27. 27.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
28. 28.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
29. 29.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
30. 30.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
31. 31.True or false: a glass marble does not let water climb. (a) True (b) False
32. 32.True or false: a strip of cloth does not let water climb. (a) False (b) True
33. 33.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
34. 34.⚖️ 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) True (b) False
35. 35.⚖️ 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) time for colour to show (c) the amount of colour
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a glass of water (d) a few hours of waiting
37. 37.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a steel spoon (d) a cotton thread
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) turmeric powder
39. 39.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
40. 40.⚖️ 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) time for colour to show (c) the kind of flower (d) the length of the stem

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