Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 708 · 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 lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a glass marble (d) a rubber eraser
2. 2.⚖️ 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
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
6. 6.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a rubber eraser (d) a glass marble
7. 7.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
8. 8.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
10. 10.⚖️ 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) time for colour to show
11. 11.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a cotton thread (d) a piece of foil
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
13. 13.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a steel spoon
14. 14.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a glass marble (d) a piece of foil
15. 15.True or false: a piece of foil does not let water climb. (a) False (b) True
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
17. 17.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
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 the one thing we change. (a) True (b) False
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a mirror (d) a glass of water
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) turmeric powder (d) yeast
24. 24.🔍 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
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
26. 26.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
27. 27.True or false: a paper towel lets water climb up it. (a) False (b) True
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a glass of water (d) a few hours of waiting
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
32. 32.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
33. 33.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a paper towel (d) a piece of chalk
38. 38.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
40. 40.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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