Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 111 · 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 the one thing we change? (a) the length of the stem (b) time for colour to show (c) the amount of water (d) the room it stands in
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a white flower (d) a few hours of waiting
3. 3.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a battery cell
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a mirror (d) a few hours of waiting
6. 6.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a piece of foil (d) a glass marble
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
9. 9.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.⚖️ 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
13. 13.True or false: a rubber eraser does not let water climb. (a) True (b) False
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a cotton thread lets water climb up it. (a) False (b) True
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) turmeric powder (d) a magnet
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
19. 19.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) yeast
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a balloon (d) yeast
22. 22.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a cotton thread (d) a glass marble
23. 23.🛟 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
24. 24.🔮 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 all turn green (c) they stay white (d) they fall off at once
25. 25.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.⚖️ 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 room it stands in (b) the amount of colour (c) the amount of water (d) time for colour to show
27. 27.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
28. 28.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) a magnet
30. 30.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a strip of cloth
31. 31.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a strip of cloth (d) a paper towel
32. 32.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a magnet (d) a few hours of waiting
34. 34.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
35. 35.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a few hours of waiting
37. 37.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a paper towel
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a white flower (d) a glass of water
40. 40.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism

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