Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 637 · 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.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
2. 2.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a piece of foil (d) a piece of chalk
3. 3.True or false: a strip of cloth lets water climb up it. (a) False (b) True
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 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 balloon (d) food colour
6. 6.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a cotton thread (d) a paper towel
7. 7.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) the amount of water
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a rubber eraser (d) a flower stem
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a balloon (d) a few hours of waiting
12. 12.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
13. 13.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) food colour (d) a white flower
15. 15.⚖️ 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 the one thing we change. (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 what we measure? (a) the amount of colour (b) the kind of flower (c) the length of the stem (d) time for colour to show
17. 17.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a paper towel (d) a glass marble
19. 19.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a piece of chalk (d) a cotton thread
20. 20.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a rubber eraser
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a glass marble (d) a cotton thread
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
23. 23.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a white flower (d) turmeric powder
25. 25.🌼 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
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
27. 27.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a cotton thread (d) a paper towel
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
30. 30.True or false: a plastic ruler lets water climb up it. (a) True (b) False
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
33. 33.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a piece of foil (d) a glass marble
34. 34.🔍 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
35. 35.True or false: a cotton thread does not let water climb. (a) True (b) False
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a white flower (d) food colour
37. 37.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a steel spoon (d) a piece of chalk
38. 38.True or false: a cotton thread lets water climb up it. (a) False (b) True
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a magnet

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