Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 405 · 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.True or false: a glass marble lets water climb up it. (a) False (b) True
2. 2.⚖️ 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 measure it (c) we change it
3. 3.⚖️ 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) False (b) True
4. 4.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a glass of water
8. 8.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
11. 11.⚖️ 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) the room it stands in (c) the length of the stem (d) the amount of colour
12. 12.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a strip of cloth (d) a paper towel
13. 13.True or false: a piece of foil lets water climb up it. (a) False (b) True
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) food colour (d) a few hours of waiting
15. 15.⚖️ 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) False (b) True
16. 16.💧 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
17. 17.🔮 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
18. 18.🔮 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 fall off at once (d) they turn two colours
19. 19.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Do we need turmeric powder 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 length of the stem (c) the amount of colour
22. 22.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
23. 23.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a paper towel (d) a cotton thread
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: a piece of foil does not let water climb. (a) False (b) True
26. 26.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a mirror (d) a balloon
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a white flower (d) a few hours of waiting
29. 29.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
32. 32.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
34. 34.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a steel spoon (d) a sugar cube
35. 35.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a magnet (d) food colour
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) a balloon
39. 39.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a piece of foil
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a piece of chalk (d) a steel spoon

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