Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 988 · 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.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a rubber eraser (d) a glass marble
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
8. 8.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
9. 9.True or false: a rubber eraser lets water climb up it. (a) True (b) False
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the length of the stem (c) the kind of flower (d) time for colour to show
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a white flower (d) a few hours of waiting
12. 12.🔮 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
13. 13.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a steel spoon (d) a paper towel
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a few hours of waiting (d) a white flower
16. 16.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a piece of foil (d) a piece of chalk
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a balloon
20. 20.⚖️ 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 water (b) the room it stands in (c) time for colour to show (d) the amount of colour
21. 21.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a mirror (d) a glass of water
23. 23.True or false: a strip of cloth lets water climb up it. (a) False (b) True
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a piece of foil (d) a sugar cube
27. 27.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a balloon (d) a glass of water
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a plastic ruler (d) a strip of cloth
30. 30.True or false: a cotton thread does not let water climb. (a) False (b) True
31. 31.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a mirror
33. 33.⚖️ 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
34. 34.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
35. 35.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a plastic ruler (d) a cotton thread
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
38. 38.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a glass marble
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
40. 40.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True

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