Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 593 · 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.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
2. 2.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
3. 3.🔮 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
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
6. 6.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
8. 8.⚖️ 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 amount of colour (b) time for colour to show (c) the kind of flower (d) the amount of water
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
10. 10.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.⚖️ 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 change it (c) we measure it
12. 12.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a glass marble (d) a flower stem
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) yeast (d) a glass of water
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a cotton thread (d) a piece of chalk
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
16. 16.True or false: a paper towel lets water climb up it. (a) True (b) False
17. 17.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.True or false: a cotton thread does not let water climb. (a) False (b) True
19. 19.🧺 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) yeast
20. 20.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a battery cell
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
23. 23.⚖️ 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 keep it the same (b) we change it (c) we measure it
24. 24.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a piece of chalk
25. 25.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a piece of chalk does not let water climb. (a) False (b) True
27. 27.🌼 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
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) a glass of water
29. 29.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.⚖️ 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
31. 31.⚖️ 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 colour (c) time for colour to show
32. 32.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a sugar cube (d) a piece of foil
33. 33.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a mirror (d) turmeric powder
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
37. 37.⚖️ 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 amount of colour (d) the length of the stem
38. 38.🧺 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 balloon (d) a few hours of waiting
39. 39.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) food colour

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