Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 159 · 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.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a battery cell (d) a few hours of waiting
2. 2.🌼 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
3. 3.True or false: a plastic ruler does not let water climb. (a) True (b) False
4. 4.⚖️ 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 amount of water (c) the room it stands in (d) the kind of flower
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
6. 6.⚖️ 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
7. 7.🧺 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 magnet
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) False (b) True
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
10. 10.⚖️ 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) True (b) False
11. 11.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ 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 room it stands in
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a plastic ruler
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a balloon (d) turmeric powder
17. 17.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a flower stem (d) a sugar cube
21. 21.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a magnet (d) turmeric powder
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
24. 24.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a plastic ruler (d) a rubber eraser
25. 25.🔮 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 turn two colours (c) they stay white (d) they fall off at once
26. 26.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a piece of foil
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a piece of foil (d) a strip of cloth
29. 29.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
30. 30.⚖️ 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
31. 31.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
32. 32.⚖️ 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 colour (b) time for colour to show (c) the kind of flower (d) the amount of water
33. 33.⚖️ 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) False (b) True
34. 34.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
35. 35.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a rubber eraser
36. 36.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
37. 37.💧 Which of these lets water climb up it? (a) a cotton thread (b) a rubber eraser (c) a glass marble (d) a plastic ruler
38. 38.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
40. 40.💧 Which of these does not let water climb? (a) a piece of foil (b) a piece of chalk (c) a paper towel (d) a cotton thread

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