Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 406 · 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? Which of these is the one thing we change? (a) the amount of water (b) time for colour to show (c) the amount of colour (d) the length of the stem
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
4. 4.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
5. 5.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a glass marble (d) a cotton thread
6. 6.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a piece of chalk (d) a cotton thread
7. 7.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
9. 9.True or false: a cotton thread lets water climb up it. (a) True (b) False
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) turmeric powder (d) yeast
11. 11.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a rubber eraser (d) a strip of cloth
12. 12.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🌼 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
15. 15.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a piece of foil (d) a steel spoon
16. 16.🧺 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 battery cell (d) a few hours of waiting
17. 17.True or false: a steel spoon lets water climb up it. (a) False (b) True
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.⚖️ 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 length of the stem (c) the amount of water
20. 20.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
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) time for colour to show (b) the kind of flower (c) the length of the stem
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a balloon (d) turmeric powder
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 the one thing we change. (a) True (b) False
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
25. 25.🔮 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
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) food colour (d) a balloon
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a balloon
29. 29.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
31. 31.⚖️ 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
32. 32.True or false: a glass marble lets water climb up it. (a) True (b) False
33. 33.🔮 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 fall off at once (c) they turn two colours (d) they all turn green
34. 34.True or false: a glass marble does not let water climb. (a) True (b) False
35. 35.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of chalk (d) a steel spoon
36. 36.🧺 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 magnet
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.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
39. 39.True or false: a plastic ruler does not let water climb. (a) False (b) True
40. 40.True or false: a flower stem does not let water climb. (a) True (b) False

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