Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 704 · 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 is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a sugar cube (d) a glass marble
2. 2.🧺 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 glass of water (d) food colour
3. 3.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a sugar cube (d) a flower stem
4. 4.True or false: a strip of cloth lets water climb up it. (a) True (b) False
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
6. 6.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a plastic ruler (d) a glass marble
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a balloon (d) a magnet
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) food colour (d) a glass of water
10. 10.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a glass of water
12. 12.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
13. 13.True or false: a steel spoon lets water climb up it. (a) True (b) False
14. 14.True or false: a cotton thread lets water climb up it. (a) False (b) True
15. 15.⚖️ 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) True (b) False
16. 16.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
17. 17.⚖️ 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 amount of water (b) the amount of colour (c) the length of the stem (d) the room it stands in
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a mirror (d) a white flower
19. 19.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
20. 20.True or false: a paper towel lets water climb up it. (a) False (b) True
21. 21.⚖️ 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 kind of flower (c) the length of the stem
22. 22.⚖️ 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) False (b) True
23. 23.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
24. 24.⚖️ 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
25. 25.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a plastic ruler (d) a cotton thread
26. 26.🛟 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
27. 27.True or false: a sugar cube does not let water climb. (a) True (b) False
28. 28.True or false: a steel spoon does not let water climb. (a) True (b) False
29. 29.⚖️ 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
30. 30.True or false: a strip of cloth does not let water climb. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a paper towel (d) a cotton thread
32. 32.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
33. 33.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
36. 36.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
38. 38.True or false: a paper towel does not let water climb. (a) False (b) True
39. 39.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
40. 40.True or false: a flower stem does not let water climb. (a) True (b) False

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