Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 885 · 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.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a sugar cube
3. 3.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
6. 6.🧺 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 white flower
7. 7.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show (d) the room it stands in
8. 8.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a piece of chalk (d) a paper towel
9. 9.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🧺 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) turmeric powder
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
12. 12.True or false: a steel spoon lets water climb up it. (a) True (b) False
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a balloon (d) food colour
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
17. 17.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a balloon (d) a few hours of waiting
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a glass of water (d) turmeric powder
21. 21.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
22. 22.⚖️ 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 measure it (c) we change it
23. 23.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
25. 25.⚖️ 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 colour
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
28. 28.True or false: a cotton thread does not let water climb. (a) True (b) False
29. 29.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
31. 31.⚖️ 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 the one thing we change. (a) False (b) True
32. 32.🧺 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 glass of water
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a few hours of waiting (d) food colour
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a piece of chalk (d) a glass marble
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a few hours of waiting
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
40. 40.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a cotton thread (d) a glass marble

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