Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 23 · 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 white flower for the coloured flower experiment? (a) needed (b) not needed
2. 2.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a cotton thread
3. 3.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of chalk (d) a steel spoon
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) yeast (d) a few hours of waiting
5. 5.True or false: a cotton thread does not let water climb. (a) True (b) False
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
7. 7.⚖️ 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) the room it stands in (c) the length of the stem (d) the amount of water
8. 8.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
10. 10.💧 Which of these does not let water climb? (a) a paper towel (b) a steel spoon (c) a piece of chalk (d) a sugar cube
11. 11.🧺 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
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.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) turmeric powder (d) a mirror
14. 14.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a piece of foil (d) a strip of cloth
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
16. 16.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
17. 17.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a steel spoon (d) a glass marble
18. 18.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a glass of water
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the length of the stem (d) the amount of colour
22. 22.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
23. 23.🔮 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
24. 24.True or false: a paper towel lets water climb up it. (a) True (b) False
25. 25.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
27. 27.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a glass marble (d) a steel spoon
28. 28.True or false: a glass marble does not let water climb. (a) False (b) True
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) turmeric powder (d) a balloon
31. 31.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
32. 32.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
34. 34.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a flower stem (c) a glass marble (d) a rubber eraser
35. 35.⚖️ 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) False (b) True
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
38. 38.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) food colour
40. 40.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False

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