Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 308 · 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.🔮 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
2. 2.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a few hours of waiting (d) a white flower
5. 5.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
6. 6.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a cotton thread (d) a steel spoon
7. 7.True or false: a strip of cloth lets water climb up it. (a) True (b) False
8. 8.⚖️ 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
9. 9.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a glass marble (d) a steel spoon
11. 11.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a strip of cloth (d) a rubber eraser
13. 13.💧 Which of these does not let water climb? (a) a glass marble (b) a cotton thread (c) a paper towel (d) a flower stem
14. 14.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.⚖️ 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 amount of water (b) the amount of colour (c) time for colour to show (d) the room it stands in
16. 16.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a piece of chalk (d) a glass marble
19. 19.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a flower stem (d) a paper towel
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 the one thing we change. (a) True (b) False
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) the length of the stem (b) time for colour to show (c) the kind of flower
22. 22.⚖️ 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 length of the stem (b) the kind of flower (c) the room it stands in (d) the amount of colour
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) food colour (d) a glass of water
25. 25.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
29. 29.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a piece of foil (d) a steel spoon
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a few hours of waiting (d) food colour
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a battery cell (d) a glass of water
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) yeast (d) a few hours of waiting
35. 35.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
38. 38.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a sugar cube (d) a flower stem
39. 39.💧 Which of these does not let water climb? (a) a paper towel (b) a rubber eraser (c) a cotton thread (d) a piece of chalk
40. 40.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens

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