Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 171 · 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.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
3. 3.True or false: a piece of chalk does not let water climb. (a) False (b) True
4. 4.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a glass of water (d) a balloon
11. 11.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
12. 12.⚖️ 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 kind of flower
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a white flower (d) yeast
14. 14.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a steel spoon
15. 15.🔮 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
16. 16.⚖️ 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
17. 17.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
18. 18.True or false: a piece of foil lets water climb up it. (a) False (b) True
19. 19.💧 Which of these does not let water climb? (a) a cotton thread (b) a plastic ruler (c) a strip of cloth (d) a piece of chalk
20. 20.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
21. 21.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a white flower (d) a few hours of waiting
23. 23.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
25. 25.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a paper towel (d) a strip of cloth
27. 27.⚖️ 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
28. 28.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
30. 30.True or false: a piece of foil does not let water climb. (a) False (b) True
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
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) time for colour to show (b) the kind of flower (c) the amount of colour (d) the length of the stem
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
39. 39.🔮 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
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour

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