Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 826 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
3. 3.⚖️ 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 change it (b) we keep it the same (c) we measure it
4. 4.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
5. 5.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) yeast
9. 9.True or false: a flower stem does not let water climb. (a) False (b) True
10. 10.True or false: a flower stem lets water climb up it. (a) True (b) False
11. 11.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
16. 16.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
17. 17.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
18. 18.🔮 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 fall off at once (c) they stay white (d) they turn two colours
19. 19.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a steel spoon (d) a rubber eraser
20. 20.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
21. 21.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a mirror (d) food colour
23. 23.🧺 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 white flower
24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a flower stem (c) a piece of foil (d) a plastic ruler
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
26. 26.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a glass marble (d) a plastic ruler
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) food colour
29. 29.True or false: a glass marble does not let water climb. (a) False (b) True
30. 30.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a sugar cube (d) a paper towel
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a few hours of waiting (d) turmeric powder
33. 33.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a battery cell (d) a balloon
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
36. 36.⚖️ 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 the one thing we change. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ 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) time for colour to show (b) the amount of water (c) the amount of colour (d) the length of the stem
39. 39.True or false: a paper towel does not let water climb. (a) True (b) False
40. 40.⚖️ 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

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