Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 383 · 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.⚖️ 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
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
3. 3.True or false: a glass marble does not let water climb. (a) False (b) True
4. 4.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a cotton thread
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) turmeric powder (d) a few hours of waiting
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a few hours of waiting (d) a white flower
9. 9.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a rubber eraser
10. 10.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
11. 11.True or false: a strip of cloth does not let water climb. (a) True (b) False
12. 12.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
13. 13.⚖️ 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) False (b) True
14. 14.⚖️ 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 colour (b) the kind of flower (c) time for colour to show (d) the length of the stem
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a mirror
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
17. 17.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
19. 19.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a mirror (d) a battery cell
21. 21.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of foil (d) a piece of chalk
22. 22.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a strip of cloth (d) a plastic ruler
23. 23.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
24. 24.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a cotton thread (d) a glass marble
27. 27.⚖️ 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
28. 28.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
29. 29.True or false: a piece of foil does not let water climb. (a) True (b) False
30. 30.True or false: a steel spoon lets water climb up it. (a) False (b) True
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) turmeric powder (d) a balloon
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
33. 33.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a piece of chalk
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a rubber eraser
36. 36.True or false: a flower stem does not let water climb. (a) True (b) False
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a few hours of waiting (d) a mirror
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
40. 40.⚖️ 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 room it stands in

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