Capillary Action Flower Experiment Worksheet

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

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