Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 43 · 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 do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
2. 2.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.True or false: a sugar cube lets water climb up it. (a) True (b) False
5. 5.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
7. 7.True or false: a flower stem does not let water climb. (a) True (b) False
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a white flower (d) a glass of water
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of water (d) the amount of colour
11. 11.True or false: a piece of chalk does not let water climb. (a) False (b) True
12. 12.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a rubber eraser (d) a piece of foil
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a magnet (d) yeast
16. 16.🧺 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
17. 17.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
18. 18.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a few hours of waiting
21. 21.🧺 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 balloon (d) food colour
22. 22.⚖️ 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) time for colour to show (c) the amount of colour (d) the kind of flower
23. 23.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
24. 24.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
25. 25.True or false: a paper towel lets water climb up it. (a) False (b) True
26. 26.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
29. 29.True or false: a cotton thread lets water climb up it. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a strip of cloth (d) a flower stem
31. 31.⚖️ 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 what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) food colour (d) a mirror
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a white flower (d) turmeric powder
34. 34.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
35. 35.🛟 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
36. 36.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
38. 38.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a paper towel (d) a strip of cloth
39. 39.True or false: a glass marble does not let water climb. (a) True (b) False
40. 40.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler

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