Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 506 · 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 strip of cloth lets water climb up it. (a) True (b) False
2. 2.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.⚖️ 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
4. 4.True or false: a piece of chalk lets water climb up it. (a) False (b) True
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.⚖️ 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 colour (b) the kind of flower (c) time for colour to show (d) the length of the stem
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a sugar cube (d) a steel spoon
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of water
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a glass of water (d) a balloon
10. 10.True or false: a piece of chalk does not let water climb. (a) False (b) True
11. 11.🔮 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
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
16. 16.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.True or false: a glass marble lets water climb up it. (a) False (b) True
18. 18.🧺 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) a magnet (d) food colour
19. 19.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a strip of cloth (d) a rubber eraser
20. 20.True or false: a plastic ruler lets water climb up it. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a strip of cloth (d) a piece of foil
22. 22.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a piece of foil (d) a cotton thread
23. 23.True or false: a paper towel lets water climb up it. (a) True (b) False
24. 24.⚖️ 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
25. 25.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
28. 28.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a rubber eraser (d) a plastic ruler
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) yeast (d) a few hours of waiting
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a balloon
35. 35.🔍 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 stem turns to ice (d) the flower floats away
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) False (b) True
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) turmeric powder
38. 38.⚖️ 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 kept the same. (a) False (b) True
39. 39.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
40. 40.⚖️ 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

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