Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 916 · 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 rubber eraser (c) a paper towel (d) a cotton thread
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
5. 5.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a piece of chalk (d) a paper towel
6. 6.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
7. 7.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: a sugar cube does not let water climb. (a) False (b) True
9. 9.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.True or false: a paper towel lets water climb up it. (a) False (b) True
11. 11.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a piece of foil (d) a plastic ruler
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.⚖️ 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 kind of flower (b) the room it stands in (c) time for colour to show (d) the length of the stem
14. 14.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a plastic ruler (d) a cotton thread
15. 15.🧺 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 battery cell (d) a white flower
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
19. 19.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
22. 22.⚖️ 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 room it stands in (c) time for colour to show (d) the amount of water
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
24. 24.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
26. 26.⚖️ 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 measure it (b) we keep it the same (c) we change it
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a battery cell
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a white flower (d) a magnet
29. 29.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a piece of chalk
31. 31.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a piece of foil (d) a rubber eraser
32. 32.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a few hours of waiting
35. 35.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a mirror (d) a glass of water
37. 37.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a paper towel (d) a piece of foil
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a battery cell (d) a magnet
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a cotton thread (d) a strip of cloth

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