Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 138 · 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 should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
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) a magnet (d) a white flower
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a mirror (d) a battery cell
5. 5.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
6. 6.🔮 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
7. 7.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a battery cell (d) a white flower
9. 9.True or false: a sugar cube lets water climb up it. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a strip of cloth (d) a steel spoon
11. 11.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a sugar cube (d) a flower stem
13. 13.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
16. 16.⚖️ 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 amount of colour (d) time for colour to show
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) food colour
18. 18.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.True or false: a piece of chalk lets water climb up it. (a) False (b) True
20. 20.True or false: a cotton thread does not let water climb. (a) False (b) True
21. 21.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a sugar cube (c) a steel spoon (d) a glass marble
23. 23.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a sugar cube
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
25. 25.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show
26. 26.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a piece of foil (d) a steel spoon
27. 27.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
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 amount of colour
29. 29.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) food colour (d) yeast
31. 31.True or false: a steel spoon does not let water climb. (a) False (b) True
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
33. 33.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 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) a white flower (d) turmeric powder
35. 35.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🧺 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) a white flower (d) a mirror
37. 37.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
38. 38.⚖️ 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 measure it (c) we change it
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a white flower (d) food colour
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed

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