Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 815 · 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.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
3. 3.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a piece of chalk (d) a steel spoon
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) food colour (d) a white flower
5. 5.⚖️ 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) time for colour to show (d) the amount of colour
6. 6.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
7. 7.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
8. 8.🌼 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
9. 9.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a strip of cloth (d) a plastic ruler
10. 10.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a cotton thread (d) a flower stem
11. 11.True or false: a flower stem does not let water climb. (a) False (b) True
12. 12.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a glass of water (d) a balloon
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 change it (b) we measure it (c) we keep it the same
15. 15.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a glass marble
16. 16.⚖️ 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 amount of colour (c) the amount of water (d) the length of the stem
17. 17.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a white flower (d) food colour
19. 19.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
20. 20.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a strip of cloth (d) a cotton thread
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
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 turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a mirror
24. 24.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a white flower (d) a glass of water
27. 27.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a strip of cloth
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a mirror (d) a white flower
29. 29.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.⚖️ 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) True (b) False
31. 31.⚖️ 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 measure it (b) we keep it the same (c) we change it
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a balloon
33. 33.True or false: a rubber eraser does not let water climb. (a) False (b) True
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) False (b) True
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
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 keep it the same (b) we change it (c) we measure it
37. 37.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a piece of foil
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) food colour (d) a glass of water

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