Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 733 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
2. 2.🧺 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) turmeric powder (d) food colour
3. 3.⚖️ 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) time for colour to show (c) the amount of water
4. 4.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
5. 5.⚖️ 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) False (b) True
6. 6.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
9. 9.🌼 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
10. 10.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a sugar cube (d) a steel spoon
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) turmeric powder
13. 13.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
14. 14.🧺 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) yeast
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a balloon (d) a magnet
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
17. 17.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
19. 19.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.True or false: a sugar cube lets water climb up it. (a) False (b) True
21. 21.🔮 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
22. 22.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.⚖️ 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 room it stands in (b) the amount of water (c) the kind of flower (d) the length of the stem
24. 24.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
27. 27.True or false: a paper towel does not let water climb. (a) False (b) True
28. 28.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
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 measure it (b) we keep it the same (c) we change it
30. 30.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a paper towel (d) a steel spoon
32. 32.True or false: a cotton thread does not let water climb. (a) False (b) True
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
35. 35.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a cotton thread (d) a piece of chalk
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a white flower (d) a glass of water
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a glass of water (d) a white flower
39. 39.True or false: a cotton thread lets water climb up it. (a) True (b) False
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False

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