Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 559 · 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.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
3. 3.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
10. 10.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a piece of foil (d) a piece of chalk
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) turmeric powder (d) a white flower
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.💧 Which of these does not let water climb? (a) a flower stem (b) a rubber eraser (c) a sugar cube (d) a paper towel
15. 15.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.💧 Dip a glass marble 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 lets water climb up it. (a) True (b) False
19. 19.🔮 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
20. 20.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
22. 22.True or false: a flower stem does not let water climb. (a) False (b) True
23. 23.⚖️ 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 water (b) the kind of flower (c) time for colour to show (d) the length of the stem
24. 24.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a magnet (d) a battery cell
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
27. 27.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a plastic ruler does not let water climb. (a) False (b) True
29. 29.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a cotton thread (d) a rubber eraser
31. 31.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
33. 33.True or false: a strip of cloth lets water climb up it. (a) False (b) True
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
36. 36.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) a magnet
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a white flower
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a few hours of waiting (d) a white flower
40. 40.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a glass marble (d) a steel spoon

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