Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 848 · 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 a mirror for the coloured flower experiment? (a) needed (b) not needed
2. 2.True or false: a paper towel lets water climb up it. (a) False (b) True
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a sugar cube (d) a piece of chalk
5. 5.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a strip of cloth (d) a piece of chalk
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) food colour (d) a white flower
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) the kind of flower (c) the amount of colour (d) time for colour to show
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) food colour (d) a few hours of waiting
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a strip of cloth (d) a glass marble
12. 12.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a flower stem (d) a piece of chalk
13. 13.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a cotton thread (d) a paper towel
14. 14.True or false: a steel spoon lets water climb up it. (a) False (b) True
15. 15.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a piece of chalk (d) a piece of foil
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.True or false: a flower stem does not let water climb. (a) False (b) True
18. 18.🔮 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
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a glass of water (d) yeast
20. 20.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
21. 21.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
22. 22.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a sugar cube (d) a plastic ruler
23. 23.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a flower stem (d) a piece of foil
24. 24.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.True or false: a glass marble does not let water climb. (a) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a battery cell (d) food colour
27. 27.True or false: a steel spoon does not let water climb. (a) True (b) False
28. 28.⚖️ 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 amount of water (b) time for colour to show (c) the amount of colour (d) the length of the stem
29. 29.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a piece of chalk (d) a rubber eraser
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
32. 32.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
39. 39.🧺 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 mirror
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True

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