Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 673 · 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) food colour (b) yeast (c) a battery cell (d) a magnet
2. 2.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
3. 3.🧺 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 battery cell
4. 4.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
7. 7.⚖️ 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 measure it (c) we change it
8. 8.⚖️ 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
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they fall off at once (d) they stay white
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
11. 11.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
12. 12.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a flower stem
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 amount of colour (b) time for colour to show (c) the length of the stem
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a cotton thread (d) a flower stem
16. 16.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a flower stem (d) a strip of cloth
17. 17.🧺 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
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a white flower (d) a balloon
20. 20.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a white flower
22. 22.True or false: a paper towel does not let water climb. (a) False (b) True
23. 23.True or false: a flower stem lets water climb up it. (a) True (b) False
24. 24.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
25. 25.⚖️ 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 change it (c) we measure it
26. 26.⚖️ 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 kind of flower (b) the length of the stem (c) the amount of water (d) the room it stands in
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a sugar cube (d) a steel spoon
28. 28.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a glass marble (d) a cotton thread
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.⚖️ 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 the one thing we change. (a) True (b) False
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
35. 35.⚖️ 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
36. 36.True or false: a flower stem does not let water climb. (a) True (b) False
37. 37.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a glass marble
39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
40. 40.⚖️ 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

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