Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 870 · 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 flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a few hours of waiting
4. 4.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a paper towel
5. 5.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a cotton thread (d) a plastic ruler
6. 6.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
7. 7.True or false: a flower stem does not let water climb. (a) False (b) True
8. 8.🧺 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) food colour (d) a mirror
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a rubber eraser (d) a flower stem
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
11. 11.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they all turn green (d) they stay white
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a rubber eraser
13. 13.🧺 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 magnet (d) food colour
14. 14.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
15. 15.True or false: a piece of foil does not let water climb. (a) False (b) True
16. 16.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
17. 17.⚖️ 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 length of the stem (b) the amount of water (c) the amount of colour (d) time for colour to show
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
21. 21.⚖️ 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) True (b) False
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 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) a battery cell (d) a glass of water
25. 25.True or false: a glass of water 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) a glass of water (b) a mirror (c) a white flower (d) food colour
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) yeast (d) a magnet
28. 28.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) yeast (d) a few hours of waiting
31. 31.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a strip of cloth
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
35. 35.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🛟 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
37. 37.True or false: a paper towel lets water climb up it. (a) False (b) True
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a piece of chalk (d) a plastic ruler
40. 40.True or false: a piece of chalk lets water climb up it. (a) True (b) False

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