Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 106 · 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.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a rubber eraser (d) a glass marble
3. 3.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) yeast (d) a balloon
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
7. 7.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 balloon is needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a plastic ruler lets water climb up it. (a) True (b) False
11. 11.🧺 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
12. 12.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
13. 13.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
14. 14.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
15. 15.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a flower stem (d) a glass marble
16. 16.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ 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
18. 18.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.⚖️ 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
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a white flower (d) a balloon
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a battery cell (d) a mirror
23. 23.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a glass marble (d) a steel spoon
24. 24.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a flower stem (d) a piece of foil
25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) food colour (d) a glass of water
29. 29.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
30. 30.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
31. 31.🧺 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 magnet (d) a white flower
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
33. 33.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a strip of cloth (d) a piece of chalk
34. 34.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a rubber eraser (d) a sugar cube
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a piece of foil (d) a rubber eraser
36. 36.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a strip of cloth (d) a piece of chalk
37. 37.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: a cotton thread does not let water climb. (a) True (b) False
39. 39.⚖️ 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 the one thing we change. (a) True (b) False
40. 40.⚖️ 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 change it (b) we measure it (c) we keep it the same

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