Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 50 · 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.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
2. 2.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the room it stands in
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
5. 5.💧 Which of these does not let water climb? (a) a steel spoon (b) a flower stem (c) a strip of cloth (d) a paper towel
6. 6.⚖️ 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
7. 7.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they all turn green (d) they fall off at once
8. 8.⚖️ 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 keep it the same (b) we change it (c) we measure it
9. 9.⚖️ 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 the one thing we change. (a) True (b) False
10. 10.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
11. 11.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a rubber eraser
12. 12.⚖️ 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
13. 13.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
14. 14.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a plastic ruler (d) a piece of chalk
15. 15.🧺 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 magnet (d) food colour
16. 16.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ 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
18. 18.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a plastic ruler (d) a piece of chalk
19. 19.🔮 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
20. 20.True or false: a sugar cube does not let water climb. (a) True (b) False
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) food colour (d) a glass of water
23. 23.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a strip of cloth (d) a cotton thread
24. 24.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 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) food colour (d) turmeric powder
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a plastic ruler
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.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a paper towel (d) a piece of chalk
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a few hours of waiting (d) a balloon
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
31. 31.⚖️ 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 keep it the same (c) we change it
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a steel spoon (d) a plastic ruler
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a white flower (d) a few hours of waiting
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
35. 35.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.⚖️ 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) True (b) False
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a magnet (d) a white flower
38. 38.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) a few hours of waiting

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