Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 910 · 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 kept the same? (a) the amount of water (b) time for colour to show (c) the length of the stem
2. 2.🛟 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
3. 3.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a paper towel (d) a glass marble
4. 4.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a cotton thread (d) a glass marble
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
6. 6.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
7. 7.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
9. 9.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
11. 11.⚖️ 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
12. 12.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a flower stem (d) a plastic ruler
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a strip of cloth (d) a steel spoon
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a mirror (d) a balloon
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
16. 16.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a strip of cloth does not let water climb. (a) True (b) False
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a white flower (d) a glass of water
20. 20.🔮 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
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) a glass of water
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) turmeric powder (d) a white flower
26. 26.⚖️ 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 length of the stem (c) the amount of colour (d) the kind of flower
27. 27.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the amount of colour (d) the length of the stem
30. 30.True or false: a rubber eraser does not let water climb. (a) False (b) True
31. 31.⚖️ 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) time for colour to show (c) the length of the stem
32. 32.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a piece of chalk (d) a plastic ruler
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🧺 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 balloon (d) a white flower
35. 35.True or false: a steel spoon lets water climb up it. (a) False (b) True
36. 36.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a plastic ruler (d) a rubber eraser
40. 40.True or false: a steel spoon does not let water climb. (a) False (b) True

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