Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 165 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
2. 2.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
3. 3.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) yeast (d) turmeric powder
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) a few hours of waiting (d) food colour
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
14. 14.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
15. 15.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
16. 16.⚖️ 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) True (b) False
17. 17.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a plastic ruler (d) a sugar cube
18. 18.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a magnet
21. 21.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
22. 22.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a cotton thread (d) a piece of foil
23. 23.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
24. 24.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
26. 26.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) turmeric powder (d) a battery cell
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
30. 30.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.⚖️ 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
32. 32.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a plastic ruler (d) a strip of cloth
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.⚖️ 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) the amount of colour (d) the length of the stem
35. 35.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a glass marble (d) a steel spoon
37. 37.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a battery cell (d) food colour
39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a plastic ruler (d) a steel spoon
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a white flower

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