Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 901 · 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.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a strip of cloth
2. 2.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
4. 4.⚖️ 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 length of the stem (d) the amount of colour
5. 5.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a strip of cloth (d) a cotton thread
6. 6.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a piece of chalk (d) a steel spoon
7. 7.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
8. 8.⚖️ 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 amount of colour (c) the length of the stem (d) the kind of flower
9. 9.⚖️ 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) True (b) False
10. 10.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
11. 11.🧺 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 magnet (d) a glass of water
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
14. 14.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) food colour (d) a white flower
16. 16.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
17. 17.True or false: a piece of chalk does not let water climb. (a) False (b) True
18. 18.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a cotton thread
20. 20.💧 Which of these does not let water climb? (a) a flower stem (b) a plastic ruler (c) a strip of cloth (d) a piece of chalk
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
23. 23.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
24. 24.True or false: a steel spoon does not let water climb. (a) False (b) True
25. 25.⚖️ 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
26. 26.🧺 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 glass of water
27. 27.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
28. 28.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a strip of cloth (d) a rubber eraser
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 kept the same. (a) True (b) False
30. 30.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
31. 31.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
34. 34.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
38. 38.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
39. 39.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a glass marble (d) a sugar cube

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