Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 920 · 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.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
2. 2.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a strip of cloth (d) a sugar cube
3. 3.⚖️ 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
4. 4.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a sugar cube
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a glass of water (d) a battery cell
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.True or false: a cotton thread lets water climb up it. (a) False (b) True
8. 8.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
9. 9.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a paper towel (d) a rubber eraser
10. 10.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
11. 11.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a strip of cloth (d) a cotton thread
12. 12.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a balloon (d) food colour
14. 14.True or false: a glass marble 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) food colour (b) a battery cell (c) a white flower (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: the length of the stem is what we measure. (a) False (b) True
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
19. 19.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.💧 Which of these lets water climb up it? (a) a flower stem (b) a steel spoon (c) a glass marble (d) a plastic ruler
21. 21.True or false: a glass marble lets water climb up it. (a) True (b) False
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
23. 23.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
24. 24.⚖️ 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) False (b) True
25. 25.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a magnet
28. 28.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a strip of cloth (d) a steel spoon
29. 29.🔍 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 water turns green (d) the petals turn bluish
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a piece of chalk (d) a plastic ruler
31. 31.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
32. 32.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a steel spoon (d) a glass marble
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) turmeric powder (d) a magnet
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
36. 36.⚖️ 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) True (b) False
37. 37.💧 Which of these does not let water climb? (a) a sugar cube (b) a steel spoon (c) a flower stem (d) a cotton thread
38. 38.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a cotton thread (d) a piece of chalk

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