Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 944 · 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) a white flower (b) yeast (c) a battery cell (d) a magnet
2. 2.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a rubber eraser
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) food colour (d) a white flower
4. 4.🔮 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 fall off at once (d) they turn two colours
5. 5.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
6. 6.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
7. 7.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a cotton thread (d) a paper towel
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
10. 10.True or false: a sugar cube lets water climb up it. (a) False (b) True
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a balloon (d) a mirror
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
14. 14.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
15. 15.True or false: a plastic ruler does not let water climb. (a) False (b) True
16. 16.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a strip of cloth (d) a rubber eraser
17. 17.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
18. 18.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
19. 19.True or false: a strip of cloth lets water climb up it. (a) False (b) True
20. 20.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 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 mirror (d) a glass of water
23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) food colour
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
26. 26.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a rubber eraser (d) a glass marble
27. 27.True or false: a rubber eraser lets water climb up it. (a) True (b) False
28. 28.⚖️ 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
29. 29.True or false: a cotton thread does not let water climb. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
31. 31.🧺 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 white flower (d) yeast
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a paper towel
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
34. 34.⚖️ 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 length of the stem (c) time for colour to show (d) the amount of water
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) food colour (d) a few hours of waiting
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) a few hours of waiting
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a glass of water (d) a white flower
39. 39.⚖️ 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
40. 40.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True

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