Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 841 · 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.⚖️ 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 what we measure. (a) True (b) False
2. 2.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they all turn green (d) they turn two colours
3. 3.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.⚖️ 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
5. 5.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
6. 6.⚖️ 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) False (b) True
7. 7.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
8. 8.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a sugar cube (d) a piece of chalk
9. 9.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
10. 10.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a balloon
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a magnet (d) a few hours of waiting
13. 13.True or false: a cotton thread does not let water climb. (a) False (b) True
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a strip of cloth
16. 16.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.⚖️ 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) the length of the stem (c) time for colour to show
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
20. 20.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ 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
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.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a balloon (d) a glass of water
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a rubber eraser (d) a glass marble
25. 25.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a paper towel lets water climb up it. (a) False (b) True
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
28. 28.⚖️ 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 amount of colour (d) the length of the stem
29. 29.⚖️ 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
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
31. 31.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a magnet (d) food colour
34. 34.True or false: a rubber eraser does not let water climb. (a) True (b) False
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
36. 36.⚖️ 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
37. 37.⚖️ 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) time for colour to show (c) the room it stands in (d) the length of the stem
38. 38.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a mirror (d) turmeric powder

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