Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 107 · 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? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the kind of flower
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) food colour (d) a mirror
3. 3.True or false: a glass marble lets water climb up it. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a paper towel (d) a piece of chalk
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
6. 6.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
7. 7.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a rubber eraser (d) a piece of chalk
8. 8.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
9. 9.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
11. 11.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a flower stem (d) a plastic ruler
12. 12.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
13. 13.True or false: a sugar cube lets water climb up it. (a) True (b) False
14. 14.True or false: a sugar cube does not let water climb. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a few hours of waiting (d) a glass of water
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
18. 18.🧺 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 balloon (d) a glass of water
19. 19.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a plastic ruler
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
22. 22.⚖️ 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
23. 23.🧺 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) a mirror (d) food colour
24. 24.True or false: a steel spoon lets water climb up it. (a) True (b) False
25. 25.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
27. 27.True or false: a cotton thread lets water climb up it. (a) True (b) False
28. 28.⚖️ 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
29. 29.True or false: a paper towel lets water climb up it. (a) True (b) False
30. 30.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a balloon (d) a few hours of waiting
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a white flower (d) a few hours of waiting
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
35. 35.True or false: a plastic ruler lets water climb up it. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a piece of chalk (d) a flower stem
37. 37.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a rubber eraser (d) a steel spoon
39. 39.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
40. 40.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a sugar cube

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