Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 732 · 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 strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a steel spoon (d) a piece of foil
3. 3.💧 Which of these does not let water climb? (a) a piece of chalk (b) a piece of foil (c) a cotton thread (d) a paper towel
4. 4.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a paper towel (d) a flower stem
5. 5.True or false: a cotton thread lets water climb up it. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a paper towel (d) a flower stem
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a rubber eraser
8. 8.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a balloon (d) food colour
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the kind of flower (c) time for colour to show
11. 11.True or false: a steel spoon does not let water climb. (a) True (b) False
12. 12.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
13. 13.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a flower stem (d) a steel spoon
14. 14.⚖️ 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
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
16. 16.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
17. 17.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they stay white (d) they all turn green
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a flower stem
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
22. 22.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
24. 24.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
25. 25.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
26. 26.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
27. 27.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a balloon
29. 29.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a glass marble (d) a plastic ruler
31. 31.True or false: a rubber eraser lets water climb up it. (a) False (b) True
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a magnet
33. 33.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.True or false: a sugar cube does not let water climb. (a) True (b) False
38. 38.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a plastic ruler (d) a rubber eraser
40. 40.True or false: a glass marble does not let water climb. (a) False (b) True

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