Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 750 · 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.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a sugar cube
2. 2.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
3. 3.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
4. 4.🔮 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
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.True or false: a paper towel does not let water climb. (a) False (b) True
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) yeast (d) a balloon
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a strip of cloth (d) a cotton thread
11. 11.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
13. 13.True or false: a piece of chalk does not let water climb. (a) True (b) False
14. 14.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: a sugar cube lets water climb up it. (a) False (b) True
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) a few hours of waiting
19. 19.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
20. 20.⚖️ 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) False (b) True
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a few hours of waiting (d) a battery cell
22. 22.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.⚖️ 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
24. 24.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.True or false: a piece of foil lets water climb up it. (a) False (b) True
26. 26.⚖️ 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
27. 27.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a plastic ruler (d) a rubber eraser
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a glass marble
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
32. 32.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
33. 33.True or false: a rubber eraser lets water climb up it. (a) True (b) False
34. 34.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a sugar cube (d) a steel spoon
36. 36.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a flower stem (d) a glass marble
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a strip of cloth (d) a flower stem
39. 39.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower

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