Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 669 · 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 of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) yeast (d) a few hours of waiting
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a battery cell (d) a glass of water
4. 4.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a plastic ruler (d) a piece of chalk
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) a white flower
7. 7.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
10. 10.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 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) a battery cell (d) a white flower
12. 12.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
13. 13.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a flower stem
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a cotton thread (d) a piece of chalk
15. 15.True or false: a plastic ruler lets water climb up it. (a) False (b) True
16. 16.⚖️ 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 kind of flower (b) the amount of water (c) the room it stands in (d) time for colour to show
17. 17.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a flower stem (d) a glass marble
21. 21.⚖️ 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
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a balloon
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 measure it (b) we change it (c) we keep it the same
25. 25.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a cotton thread (d) a strip of cloth
27. 27.⚖️ 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) True (b) False
28. 28.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
29. 29.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
30. 30.⚖️ 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
31. 31.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
32. 32.🔮 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 stay white (c) they fall off at once (d) they turn two colours
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
35. 35.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a mirror
37. 37.⚖️ 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 colour
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a mirror (d) a balloon
39. 39.True or false: a rubber eraser does not let water climb. (a) True (b) False
40. 40.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed

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