Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 412 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
3. 3.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a plastic ruler (d) a paper towel
4. 4.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
5. 5.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a balloon
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) food colour (d) a glass of water
9. 9.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
11. 11.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
13. 13.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a paper towel (d) a glass marble
15. 15.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
17. 17.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
18. 18.⚖️ 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) time for colour to show (b) the length of the stem (c) the amount of colour (d) the amount of water
19. 19.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a magnet
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a battery cell (d) yeast
23. 23.🧺 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 magnet (d) a white flower
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a battery cell
25. 25.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
26. 26.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a steel spoon (d) a paper towel
27. 27.🔍 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
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
30. 30.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a sugar cube
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
34. 34.True or false: a cotton thread does not let water climb. (a) True (b) False
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
36. 36.⚖️ 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) the kind of flower (c) time for colour to show
37. 37.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
38. 38.True or false: a plastic ruler lets water climb up it. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of foil (c) a plastic ruler (d) a steel spoon
40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a glass marble (d) a steel spoon

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