Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 423 · 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.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
2. 2.True or false: a piece of chalk lets water climb up it. (a) True (b) False
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) turmeric powder
4. 4.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a magnet (d) turmeric powder
6. 6.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
8. 8.⚖️ 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 keep it the same (b) we change it (c) we measure it
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) yeast (d) a white flower
10. 10.⚖️ 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 colour (b) time for colour to show (c) the length of the stem
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a rubber eraser
12. 12.⚖️ 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
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
14. 14.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
15. 15.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.True or false: a sugar cube does not let water climb. (a) True (b) False
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a few hours of waiting (d) food colour
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a piece of foil (d) a paper towel
20. 20.True or false: a plastic ruler 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 amount of water (c) the length of the stem
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
24. 24.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
25. 25.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a piece of foil does not let water climb. (a) True (b) False
27. 27.True or false: a paper towel does not let water climb. (a) True (b) False
28. 28.⚖️ 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 change it (b) we keep it the same (c) we measure it
29. 29.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a piece of chalk (d) a paper towel
30. 30.⚖️ 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 colour (b) the amount of water (c) time for colour to show (d) the length of the stem
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
32. 32.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
36. 36.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a flower stem (d) a piece of foil
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) food colour
38. 38.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a glass marble (d) a paper towel
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a glass of water
40. 40.True or false: a steel spoon does not let water climb. (a) False (b) True

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