Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 359 · 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.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
2. 2.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a strip of cloth (d) a rubber eraser
4. 4.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a few hours of waiting
6. 6.⚖️ 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 the one thing we change. (a) False (b) True
7. 7.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
10. 10.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a sugar cube (d) a piece of chalk
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a few hours of waiting (d) a white flower
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a white flower (d) a battery cell
14. 14.⚖️ 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 change it (c) we measure it
15. 15.True or false: a cotton thread does not let water climb. (a) False (b) True
16. 16.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a white flower
20. 20.⚖️ 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 what we measure. (a) False (b) True
21. 21.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
22. 22.True or false: a plastic ruler lets water climb up it. (a) False (b) True
23. 23.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a plastic ruler (d) a piece of chalk
25. 25.True or false: a sugar cube does not let water climb. (a) True (b) False
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
27. 27.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a cotton thread (d) a rubber eraser
28. 28.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 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) food colour (d) yeast
33. 33.True or false: a rubber eraser does not let water climb. (a) False (b) True
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) food colour
36. 36.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ 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 colour (b) the room it stands in (c) time for colour to show (d) the length of the stem
39. 39.True or false: a piece of foil lets water climb up it. (a) False (b) True
40. 40.⚖️ 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

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