Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 571 · 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? True or false: the kind of flower is what we measure. (a) False (b) True
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower
5. 5.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a strip of cloth (d) a paper towel
8. 8.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a piece of foil (d) a flower stem
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
11. 11.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a rubber eraser
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a plastic ruler (d) a piece of chalk
14. 14.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a battery cell (d) a few hours of waiting
18. 18.True or false: a sugar cube lets water climb up it. (a) False (b) True
19. 19.🔍 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 petals turn bluish (d) the stem turns to ice
20. 20.⚖️ 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
21. 21.⚖️ 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) False (b) True
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
24. 24.⚖️ 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) False (b) True
25. 25.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
28. 28.True or false: a glass marble does not let water climb. (a) True (b) False
29. 29.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
31. 31.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
32. 32.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a sugar cube (d) a strip of cloth
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
34. 34.🔮 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 fall off at once (d) they stay white
35. 35.🔮 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
36. 36.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a white flower (d) a glass of water
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True

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