Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 394 · 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.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.⚖️ 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
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a strip of cloth (d) a rubber eraser
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
5. 5.🔮 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
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a white flower (d) food colour
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a glass of water (d) a balloon
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
10. 10.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
12. 12.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
14. 14.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
15. 15.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a steel spoon (d) a plastic ruler
16. 16.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🧺 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 battery cell (d) a white flower
18. 18.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of water (d) the length of the stem
19. 19.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a flower stem (d) a strip of cloth
20. 20.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a strip of cloth (d) a piece of chalk
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
22. 22.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a cotton thread (d) a strip of cloth
23. 23.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a glass marble (d) a steel spoon
24. 24.🧺 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) turmeric powder (d) a few hours of waiting
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a few hours of waiting
27. 27.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
29. 29.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.🛟 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
31. 31.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) a few hours of waiting
34. 34.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) a white flower
36. 36.🧺 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 glass of water (d) a balloon
37. 37.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a flower stem
38. 38.True or false: a cotton thread does not let water climb. (a) False (b) True
39. 39.True or false: a glass marble lets water climb up it. (a) True (b) False
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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