Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 907 · 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.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) yeast (d) food colour
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a magnet (d) food colour
4. 4.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a paper towel (d) a steel spoon
6. 6.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
7. 7.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they all turn green (d) they fall off at once
8. 8.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a paper towel (d) a sugar cube
10. 10.🔮 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
11. 11.🔍 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
12. 12.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) turmeric powder
14. 14.True or false: a glass marble does not let water climb. (a) True (b) False
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a balloon (d) a few hours of waiting
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a piece of chalk (d) a piece of foil
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
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 change it (c) we measure it
21. 21.💧 Which of these does not let water climb? (a) a steel spoon (b) a cotton thread (c) a paper towel (d) a strip of cloth
22. 22.⚖️ 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) the kind of flower (c) time for colour to show (d) the length of the stem
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) yeast (d) a white flower
24. 24.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
25. 25.💧 Dip a flower stem 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? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the amount of water (d) the room it stands in
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a magnet (d) a balloon
28. 28.🌼 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
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
31. 31.⚖️ 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
32. 32.True or false: a rubber eraser does not let water climb. (a) False (b) True
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
34. 34.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
35. 35.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a cotton thread (d) a piece of foil
36. 36.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a plastic ruler (d) a steel spoon
37. 37.⚖️ 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
38. 38.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
39. 39.True or false: a white flower 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? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same

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