Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 38 · 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) food colour (c) a mirror (d) a glass of water
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
3. 3.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
4. 4.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
6. 6.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🧺 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 white flower (d) a balloon
11. 11.⚖️ 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 room it stands in (b) the amount of water (c) time for colour to show (d) the kind of flower
12. 12.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
15. 15.⚖️ 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) True (b) False
16. 16.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 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 white flower (d) a battery cell
18. 18.🧺 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) a magnet
19. 19.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a flower stem
20. 20.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a sugar cube (d) a glass marble
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) yeast (d) a white flower
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a cotton thread
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) turmeric powder (d) yeast
26. 26.⚖️ 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
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
28. 28.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a cotton thread (d) a paper towel
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a few hours of waiting (d) a mirror
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a steel spoon (d) a rubber eraser
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.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a rubber eraser
34. 34.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a paper towel does not let water climb. (a) False (b) True
37. 37.True or false: a flower stem does not let water climb. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a strip of cloth
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a mirror
40. 40.🔮 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 turn two colours (d) they stay white

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