Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 722 · 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? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a cotton thread (d) a paper towel
3. 3.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
6. 6.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🧺 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) a magnet
8. 8.🔮 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 turn two colours (c) they fall off at once (d) they stay white
9. 9.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a piece of chalk
10. 10.🧺 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) yeast (d) food colour
11. 11.🌼 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
12. 12.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a piece of chalk
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a glass marble lets water climb up it. (a) True (b) False
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
18. 18.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a rubber eraser
19. 19.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
20. 20.⚖️ 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 measure it (c) we change it
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
22. 22.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the stem turns blue (d) the flower glows
23. 23.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a cotton thread (d) a piece of chalk
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) yeast (d) a glass of water
25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a sugar cube
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 change it (b) we keep it the same (c) we measure it
29. 29.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a piece of foil
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a balloon (d) a mirror
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 kind of flower (b) the length of the stem (c) time for colour to show
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
35. 35.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
36. 36.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a battery cell (d) a balloon
38. 38.⚖️ 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 kept the same. (a) False (b) True
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a balloon
40. 40.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True

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