Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 881 · 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.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.⚖️ 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 colour (b) the length of the stem (c) time for colour to show (d) the amount of water
3. 3.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
4. 4.⚖️ 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
5. 5.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
7. 7.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
8. 8.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
10. 10.True or false: a paper towel does not let water climb. (a) True (b) False
11. 11.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
14. 14.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
16. 16.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a battery cell (d) turmeric powder
18. 18.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a piece of chalk (d) a flower stem
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) yeast (d) food colour
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a rubber eraser
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) turmeric powder (d) a few hours of waiting
29. 29.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a magnet (d) a glass of water
31. 31.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: a piece of chalk does not let water climb. (a) True (b) False
33. 33.⚖️ 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 water (b) the room it stands in (c) the kind of flower (d) the length of the stem
34. 34.True or false: a rubber eraser lets water climb up it. (a) False (b) True
35. 35.True or false: a plastic ruler lets water climb up it. (a) True (b) False
36. 36.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a glass of water (d) a white flower
40. 40.⚖️ 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) False (b) True

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