Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 418 · 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.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
3. 3.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
4. 4.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
7. 7.True or false: a paper towel does not let water climb. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a piece of chalk (d) a strip of cloth
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) time for colour to show (c) the room it stands in (d) the length of the stem
10. 10.True or false: a cotton thread does not let water climb. (a) True (b) False
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) food colour
12. 12.⚖️ 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 the one thing we change. (a) True (b) False
13. 13.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a glass marble (d) a plastic ruler
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) turmeric powder (d) a mirror
15. 15.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
18. 18.⚖️ 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 kept the same. (a) False (b) True
19. 19.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 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 white flower (d) a mirror
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a few hours of waiting
24. 24.True or false: a steel spoon does not let water climb. (a) False (b) True
25. 25.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
27. 27.⚖️ 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 room it stands in (c) the kind of flower (d) the length of the stem
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) a glass of water
29. 29.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: a sugar cube lets water climb up it. (a) False (b) True
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) yeast (d) a white flower
32. 32.💧 Which of these does not let water climb? (a) a piece of foil (b) a flower stem (c) a paper towel (d) a cotton thread
33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
35. 35.True or false: a paper towel lets water climb up it. (a) True (b) False
36. 36.True or false: a glass marble lets water climb up it. (a) False (b) True
37. 37.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a piece of chalk (d) a paper towel
39. 39.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a cotton thread (d) a glass marble

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