Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 135 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
2. 2.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
3. 3.🧺 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 mirror
4. 4.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
5. 5.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) a balloon
8. 8.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
9. 9.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
10. 10.⚖️ 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 amount of colour (c) time for colour to show (d) the length of the stem
11. 11.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
12. 12.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a white flower
14. 14.⚖️ 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) time for colour to show (c) the length of the stem
15. 15.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a balloon (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a piece of foil (d) a piece of chalk
19. 19.⚖️ 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 change it (c) we measure it
20. 20.True or false: a rubber eraser lets water climb up it. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a piece of foil (d) a steel spoon
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) food colour
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
24. 24.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a few hours of waiting (d) yeast
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
28. 28.⚖️ 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) False (b) True
29. 29.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a piece of foil (d) a sugar cube
31. 31.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.True or false: a piece of chalk does not let water climb. (a) False (b) True
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a piece of chalk (d) a sugar cube
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) turmeric powder (d) a magnet
37. 37.⚖️ 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) time for colour to show (c) the room it stands in
38. 38.⚖️ 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) False (b) True
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
40. 40.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed

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