Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 491 · 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.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
2. 2.⚖️ 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 water (b) the kind of flower (c) time for colour to show (d) the amount of colour
3. 3.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
4. 4.True or false: a sugar cube does not let water climb. (a) True (b) False
5. 5.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
6. 6.True or false: a paper towel lets water climb up it. (a) True (b) False
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) turmeric powder (d) a battery cell
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
9. 9.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
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) time for colour to show (b) the amount of colour (c) the kind of flower (d) the length of the stem
11. 11.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
12. 12.💧 Which of these does not let water climb? (a) a glass marble (b) a strip of cloth (c) a sugar cube (d) a cotton thread
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a paper towel (d) a rubber eraser
15. 15.True or false: a glass marble lets water climb up it. (a) False (b) True
16. 16.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a paper towel (d) a plastic ruler
17. 17.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
18. 18.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) yeast (d) food colour
23. 23.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
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.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a flower stem (d) a glass marble
26. 26.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a sugar cube (d) a steel spoon
27. 27.⚖️ 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
28. 28.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a cotton thread (d) a piece of chalk
29. 29.🔮 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
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a white flower (d) food colour
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) turmeric powder (d) a white flower
32. 32.🔍 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
33. 33.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a magnet
35. 35.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a piece of chalk (d) a rubber eraser
36. 36.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a balloon (d) a few hours of waiting
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a white flower

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