Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 290 · 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 few hours of waiting (b) food colour (c) a glass of water (d) turmeric powder
2. 2.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a steel spoon (d) a cotton thread
3. 3.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
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 amount of colour (b) the length of the stem (c) the amount of water (d) time for colour to show
5. 5.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a piece of foil (d) a rubber eraser
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a flower stem
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
9. 9.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
10. 10.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a strip of cloth (d) a paper towel
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a mirror (d) a few hours of waiting
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) the length of the stem (c) the kind of flower (d) time for colour to show
14. 14.🔮 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
15. 15.⚖️ 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
16. 16.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
17. 17.True or false: a cotton thread does not let water climb. (a) True (b) False
18. 18.💧 Which of these lets water climb up it? (a) a paper towel (b) a rubber eraser (c) a glass marble (d) a plastic ruler
19. 19.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) food colour
24. 24.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
25. 25.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a glass marble (d) a strip of cloth
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
28. 28.True or false: a piece of chalk lets water climb up it. (a) True (b) False
29. 29.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
32. 32.⚖️ 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
33. 33.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a flower stem (d) a cotton thread
35. 35.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
36. 36.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: a paper towel does not let water climb. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a cotton thread (d) a plastic ruler
40. 40.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed

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