Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 546 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
3. 3.True or false: a paper towel does not let water climb. (a) False (b) True
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) food colour
5. 5.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
7. 7.🔮 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
8. 8.⚖️ 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 keep it the same (c) we change it
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 amount of water (b) the length of the stem (c) the kind of flower (d) time for colour to show
10. 10.True or false: a plastic ruler lets water climb up it. (a) True (b) False
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a piece of foil (d) a steel spoon
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
14. 14.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
18. 18.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a steel spoon does not let water climb. (a) True (b) False
20. 20.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a paper towel
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
22. 22.⚖️ 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 colour (b) time for colour to show (c) the length of the stem
23. 23.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
24. 24.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
25. 25.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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) time for colour to show (b) the kind of flower (c) the amount of colour (d) the length of the stem
27. 27.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a paper towel (d) a cotton thread
28. 28.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a glass marble
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a battery cell (d) a glass of water
30. 30.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) food colour (d) a white flower
32. 32.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a white flower (d) food colour
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a few hours of waiting (d) a balloon
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
39. 39.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a sugar cube (d) a plastic ruler

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