Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 785 · 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.⚖️ 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 amount of water (b) the length of the stem (c) time for colour to show
2. 2.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
3. 3.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a strip of cloth (d) a cotton thread
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 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) yeast
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
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 turn two colours (d) they all turn green
11. 11.⚖️ 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) True (b) False
12. 12.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
13. 13.True or false: a steel spoon lets water climb up it. (a) True (b) False
14. 14.🧺 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) a magnet (d) a white flower
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
16. 16.⚖️ 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 kind of flower (c) the amount of water (d) the amount of colour
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
18. 18.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
21. 21.🧺 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 mirror (d) food colour
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a piece of foil
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
27. 27.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a glass marble (d) a steel spoon
28. 28.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.⚖️ 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 the one thing we change. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
33. 33.True or false: a strip of cloth does not let water climb. (a) False (b) True
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a balloon (d) a magnet
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) yeast (d) a glass of water
39. 39.⚖️ 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
40. 40.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows

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