Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 98 · 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.True or false: a piece of chalk lets water climb up it. (a) True (b) False
2. 2.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) turmeric powder (d) a mirror
6. 6.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
7. 7.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a mirror (d) a white flower
9. 9.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
10. 10.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a steel spoon (d) a sugar cube
11. 11.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 water”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
14. 14.True or false: a plastic ruler does not let water climb. (a) True (b) False
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) a glass of water
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a few hours of waiting
17. 17.🧺 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) food colour (d) yeast
18. 18.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.True or false: a strip of cloth lets water climb up it. (a) True (b) False
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a glass of water
23. 23.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a plastic ruler (d) a sugar cube
24. 24.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 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
26. 26.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a plastic ruler (d) a strip of cloth
27. 27.🧺 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) food colour
28. 28.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a sugar cube (d) a strip of cloth
29. 29.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
30. 30.True or false: a paper towel does not let water climb. (a) True (b) False
31. 31.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
32. 32.True or false: a strip of cloth does not let water climb. (a) True (b) False
33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a rubber eraser (b) a flower stem (c) a steel spoon (d) a plastic ruler
35. 35.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a cotton thread
37. 37.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a glass marble (d) a paper towel
38. 38.🔮 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 turn two colours (d) they fall off at once
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) yeast (d) food colour
40. 40.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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