Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 272 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a mirror (d) a glass of water
3. 3.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
5. 5.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) yeast (d) a balloon
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) food colour (d) a white flower
8. 8.⚖️ 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 kind of flower (b) the amount of colour (c) the length of the stem (d) time for colour to show
9. 9.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
13. 13.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) turmeric powder (d) a balloon
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
16. 16.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a piece of foil (d) a steel spoon
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) a white flower (d) food colour
18. 18.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a cotton thread (d) a sugar cube
19. 19.🔮 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
20. 20.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a paper towel (d) a strip of cloth
21. 21.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
22. 22.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
23. 23.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
25. 25.True or false: a white flower is not 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? True or false: the room it stands in is what we measure. (a) True (b) False
27. 27.⚖️ 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 the one thing we change. (a) False (b) True
28. 28.⚖️ 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 colour (b) the kind of flower (c) the length of the stem (d) time for colour to show
29. 29.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a glass of water
31. 31.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: a piece of chalk does not let water climb. (a) False (b) True
33. 33.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a steel spoon (d) a rubber eraser
35. 35.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a paper towel (d) a plastic ruler
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a glass of water (d) food colour
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
39. 39.True or false: a battery cell is 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 kind of flower”? (a) we keep it the same (b) we change it (c) we measure it

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