Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 596 · 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: a glass of water is needed for the coloured flower experiment. (a) True (b) False
2. 2.True or false: a flower stem does not let water climb. (a) True (b) False
3. 3.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ 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) True (b) False
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
7. 7.⚖️ 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 room it stands in (b) the length of the stem (c) the amount of water (d) time for colour to show
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 amount of water (b) the length of the stem (c) the kind of flower (d) the room it stands in
9. 9.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
10. 10.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
11. 11.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) a glass of water
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) food colour
14. 14.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a plastic ruler (d) a sugar cube
15. 15.True or false: a cotton thread does not let water climb. (a) True (b) False
16. 16.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) food colour (d) a few hours of waiting
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (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 kind of flower (b) the length of the stem (c) time for colour to show
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
24. 24.True or false: a sugar cube does not let water climb. (a) False (b) True
25. 25.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
27. 27.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
29. 29.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
30. 30.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
32. 32.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a sugar cube (d) a steel spoon
33. 33.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
34. 34.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a cotton thread
35. 35.True or false: a sugar cube lets water climb up it. (a) True (b) False
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
38. 38.True or false: a flower stem lets water climb up it. (a) True (b) False
39. 39.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False

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