Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 187 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
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 what we measure. (a) True (b) False
3. 3.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
4. 4.⚖️ 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 change it (b) we keep it the same (c) we measure it
5. 5.🧺 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 white flower (d) food colour
6. 6.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a steel spoon (d) a plastic ruler
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a flower stem (d) a strip of cloth
12. 12.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
13. 13.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
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 change it (b) we measure it (c) we keep it the same
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) food colour (d) a few hours of waiting
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 keep it the same (c) we measure it
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a white flower (d) a few hours of waiting
20. 20.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a strip of cloth (d) a paper towel
21. 21.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: a cotton thread lets water climb up it. (a) False (b) True
27. 27.🌼 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
28. 28.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
29. 29.True or false: a sugar cube does not let water climb. (a) True (b) False
30. 30.🛟 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
31. 31.⚖️ 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 room it stands in
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a white flower (d) a few hours of waiting
33. 33.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.⚖️ 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
35. 35.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
36. 36.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a glass of water (d) turmeric powder
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a mirror
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
40. 40.⚖️ 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 colour (c) the length of the stem (d) the amount of water

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