Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 8 · 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) yeast (b) a white flower (c) food colour (d) a few hours of waiting
2. 2.🔮 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
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
4. 4.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
5. 5.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
6. 6.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: a piece of chalk lets water climb up it. (a) True (b) False
8. 8.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a sugar cube (d) a plastic ruler
9. 9.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a strip of cloth (d) a flower stem
11. 11.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
12. 12.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) yeast (d) a few hours of waiting
16. 16.⚖️ 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 what we measure. (a) True (b) False
17. 17.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem (d) the amount of water
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
19. 19.⚖️ 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 length of the stem (c) time for colour to show (d) the kind of flower
20. 20.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) yeast (d) a battery cell
23. 23.True or false: a cotton thread does not let water climb. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a paper towel (d) a plastic ruler
25. 25.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a piece of chalk
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
28. 28.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a glass marble (d) a flower stem
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a piece of foil
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
31. 31.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a white flower (d) a few hours of waiting
33. 33.True or false: a paper towel lets water climb up it. (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 the one thing we change. (a) False (b) True
35. 35.⚖️ 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
36. 36.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a mirror
40. 40.⚖️ 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

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