Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 489 · 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 food colour for the coloured flower experiment? (a) needed (b) not needed
2. 2.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a paper towel (d) a plastic ruler
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.⚖️ 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
6. 6.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
8. 8.⚖️ 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 measure it (b) we keep it the same (c) we change it
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
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) time for colour to show (b) the room it stands in (c) the length of the stem
11. 11.True or false: a piece of chalk does not let water climb. (a) False (b) True
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) food colour (d) a white flower
13. 13.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) turmeric powder (d) a few hours of waiting
15. 15.True or false: a sugar cube does not let water climb. (a) False (b) True
16. 16.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
17. 17.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.⚖️ 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
21. 21.⚖️ 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 length of the stem (c) the amount of water (d) time for colour to show
22. 22.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
24. 24.True or false: a steel spoon lets water climb up it. (a) False (b) True
25. 25.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
29. 29.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a sugar cube
30. 30.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
31. 31.⚖️ 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 amount of water (c) the kind of flower (d) the length of the stem
32. 32.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
35. 35.True or false: a plastic ruler does not let water climb. (a) True (b) False
36. 36.True or false: a piece of chalk lets water climb up it. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a white flower
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a mirror (d) a battery cell
40. 40.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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