Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 361 · 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) a glass of water (b) a mirror (c) a magnet (d) a balloon
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a magnet (d) a white flower
3. 3.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ 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 room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
5. 5.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
9. 9.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
10. 10.True or false: a piece of foil lets water climb up it. (a) False (b) True
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a balloon
12. 12.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
13. 13.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a white flower (d) food colour
15. 15.⚖️ 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
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
18. 18.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
19. 19.True or false: a sugar cube does not let water climb. (a) True (b) False
20. 20.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
21. 21.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a strip of cloth (d) a sugar cube
25. 25.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
26. 26.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
27. 27.🌼 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
28. 28.⚖️ 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 measure it (c) we change it
29. 29.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a cotton thread (d) a plastic ruler
30. 30.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a sugar cube
31. 31.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) food colour (d) a few hours of waiting
33. 33.True or false: a flower stem does not let water climb. (a) False (b) True
34. 34.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a glass of water
36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a magnet (d) a white flower
38. 38.🧺 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 battery cell
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
40. 40.⚖️ 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

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