Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 816 · 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 flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
2. 2.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a cotton thread
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is the one thing we change. (a) False (b) True
4. 4.True or false: a piece of chalk does not let water climb. (a) False (b) True
5. 5.🔮 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 turn two colours (d) they all turn green
6. 6.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.True or false: a sugar cube lets water climb up it. (a) True (b) False
8. 8.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a piece of foil (d) a cotton thread
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) food colour (d) a glass of water
11. 11.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a glass marble (d) a flower stem
12. 12.True or false: a flower stem lets water climb up it. (a) False (b) True
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a strip of cloth (d) a cotton thread
15. 15.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
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) time for colour to show (b) the room it stands in (c) the length of the stem
18. 18.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a rubber eraser (d) a steel spoon
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a battery cell (d) a glass of water
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) food colour (d) a mirror
24. 24.True or false: a glass marble does not let water climb. (a) False (b) True
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
26. 26.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) turmeric powder (d) a few hours of waiting
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
29. 29.True or false: a piece of foil lets water climb up it. (a) True (b) False
30. 30.⚖️ 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 kept the same. (a) True (b) False
31. 31.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a strip of cloth
32. 32.⚖️ 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
33. 33.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a white flower (d) a balloon
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
36. 36.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
37. 37.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a rubber eraser does not let water climb. (a) False (b) True
40. 40.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic

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