Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 946 · 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.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a rubber eraser
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a mirror
3. 3.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
4. 4.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of chalk (d) a glass marble
5. 5.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a steel spoon (d) a paper towel
6. 6.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) food colour (d) a few hours of waiting
9. 9.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a paper towel (d) a strip of cloth
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 stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
12. 12.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
18. 18.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
20. 20.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
23. 23.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) turmeric powder (d) a white flower
26. 26.True or false: a piece of foil does not let water climb. (a) False (b) True
27. 27.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 length of the stem (d) the kind of flower
29. 29.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a glass marble
31. 31.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
34. 34.True or false: a cotton thread lets water climb up it. (a) True (b) False
35. 35.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a glass marble
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) yeast (d) a few hours of waiting
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a piece of foil (d) a strip of cloth
40. 40.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True

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