Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 677 · 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 not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) yeast
2. 2.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a strip of cloth (d) a cotton thread
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
6. 6.⚖️ 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
7. 7.⚖️ 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 the one thing we change. (a) True (b) False
8. 8.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
9. 9.True or false: a glass of water is not needed for the coloured flower experiment. (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 fall off at once (c) they all turn green (d) they turn two colours
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a few hours of waiting (d) a glass of water
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
15. 15.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a mirror (d) a magnet
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) food colour (d) a white flower
21. 21.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a sugar cube (d) a strip of cloth
23. 23.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
25. 25.True or false: a rubber eraser lets water climb up it. (a) False (b) True
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a glass of water (d) a balloon
27. 27.🌼 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
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a battery cell
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) food colour (d) a balloon
30. 30.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a glass marble (d) a steel spoon
31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a sugar cube
32. 32.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) food colour (d) a few hours of waiting
34. 34.True or false: a paper towel does not let water climb. (a) True (b) False
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 change it (b) we keep it the same (c) we measure it
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) turmeric powder (d) a white flower
37. 37.🧺 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) a glass of water (d) a mirror
38. 38.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
39. 39.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a steel spoon (d) a sugar cube

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