Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 204 · 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 kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ 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 change it (c) we measure it
3. 3.True or false: a sugar cube does not let water climb. (a) True (b) False
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
5. 5.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
6. 6.True or false: a piece of chalk does not let water climb. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a piece of foil
8. 8.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
9. 9.⚖️ 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 room it stands in (c) the amount of water (d) the amount of colour
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a mirror
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a magnet (d) a battery cell
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
15. 15.⚖️ 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 the one thing we change. (a) False (b) True
16. 16.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ 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
18. 18.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a battery cell (d) a glass of water
20. 20.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
21. 21.⚖️ 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
22. 22.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
25. 25.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
26. 26.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🔍 Which is the odd one out? (a) a flower stem (b) a glass marble (c) a piece of foil (d) a steel spoon
28. 28.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
30. 30.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a piece of chalk (d) a sugar cube
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a magnet (d) yeast
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a battery cell
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
34. 34.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a cotton thread (d) a piece of foil
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a sugar cube
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
37. 37.True or false: a steel spoon lets water climb up it. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a flower stem (d) a cotton thread
39. 39.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed

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