Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 517 · 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.🧺 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 magnet (d) food colour
2. 2.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
3. 3.True or false: a strip of cloth does not let water climb. (a) False (b) True
4. 4.True or false: a cotton thread lets water climb up it. (a) False (b) True
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
6. 6.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a piece of chalk (d) a sugar cube
7. 7.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a steel spoon (d) a flower stem
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.🔮 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 all turn green (c) they turn two colours (d) they fall off at once
11. 11.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a few hours of waiting (d) yeast
14. 14.⚖️ 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) False (b) True
15. 15.True or false: a sugar cube does not let water climb. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a piece of foil (d) a plastic ruler
17. 17.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
19. 19.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
20. 20.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.True or false: a flower stem does not let water climb. (a) True (b) False
28. 28.⚖️ 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 amount of colour (c) the length of the stem
29. 29.🛟 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
30. 30.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a cotton thread (d) a strip of cloth
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
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 the one thing we change. (a) True (b) False
34. 34.⚖️ 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 length of the stem (b) the amount of colour (c) the kind of flower (d) time for colour to show
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) food colour
36. 36.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a paper towel (d) a rubber eraser
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
38. 38.True or false: a piece of foil lets water climb up it. (a) True (b) False
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a glass marble (d) a piece of foil

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