Capillary Action Flower Experiment Worksheet

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

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