Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 500 · 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.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
3. 3.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
4. 4.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
6. 6.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a sugar cube (d) a glass marble
7. 7.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) yeast (d) a glass of water
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) food colour (d) a glass of water
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
13. 13.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
14. 14.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.⚖️ 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 colour (d) time for colour to show
16. 16.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
17. 17.True or false: a plastic ruler does not let water climb. (a) False (b) True
18. 18.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a cotton thread (d) a plastic ruler
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a plastic ruler
21. 21.🧺 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 battery cell (d) a white flower
22. 22.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
24. 24.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
25. 25.⚖️ 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 kept the same. (a) False (b) True
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🔮 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 stay white (c) they fall off at once (d) they all turn green
29. 29.⚖️ 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 the one thing we change. (a) False (b) True
30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a piece of chalk
33. 33.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.⚖️ 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) time for colour to show (c) the amount of water (d) the amount of colour
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a mirror (d) a white flower
37. 37.True or false: a steel spoon does not let water climb. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a steel spoon (d) a paper towel
39. 39.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a plastic ruler (d) a cotton thread
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) turmeric powder

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