Capillary Action Flower Experiment Worksheet

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

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