Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 197 · 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.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
2. 2.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) yeast
4. 4.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
5. 5.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a glass marble (d) a steel spoon
6. 6.⚖️ 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 the one thing we change. (a) True (b) False
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a battery cell
9. 9.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a steel spoon (d) a piece of foil
10. 10.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a paper towel (d) a cotton thread
12. 12.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a mirror
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) a white flower
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a flower stem (d) a piece of foil
17. 17.🔮 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 stay white (d) they turn two colours
18. 18.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
21. 21.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a piece of chalk (d) a flower stem
25. 25.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) turmeric powder (d) a few hours of waiting
28. 28.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a sugar cube
29. 29.True or false: a piece of chalk does not let water climb. (a) True (b) False
30. 30.⚖️ 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
31. 31.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
32. 32.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
33. 33.⚖️ 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
34. 34.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a cotton thread (d) a piece of foil
35. 35.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a strip of cloth
36. 36.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a glass marble (d) a flower stem
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a strip of cloth (d) a plastic ruler
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
39. 39.⚖️ 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 kept the same. (a) True (b) False
40. 40.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green

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