Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 894 · 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? True or false: the room it stands in is the one thing we change. (a) False (b) True
2. 2.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
3. 3.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a magnet (d) food colour
5. 5.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
6. 6.⚖️ 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) True (b) False
7. 7.True or false: a paper towel does not let water climb. (a) True (b) False
8. 8.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a few hours of waiting (d) a balloon
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a white flower (d) a glass of water
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a sugar cube
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a glass of water (d) a few hours of waiting
13. 13.⚖️ 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 measure it (c) we change it
14. 14.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
15. 15.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a few hours of waiting
22. 22.🔮 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
23. 23.⚖️ 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
24. 24.⚖️ 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 room it stands in (c) the length of the stem (d) time for colour to show
25. 25.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
26. 26.⚖️ 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 change it (c) we measure it
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
28. 28.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a flower stem does not let water climb. (a) True (b) False
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) yeast (d) a few hours of waiting
31. 31.⚖️ 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
32. 32.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
35. 35.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
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 water”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
38. 38.⚖️ 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 kind of flower (c) the length of the stem (d) the amount of colour
39. 39.True or false: a piece of chalk lets water climb up it. (a) True (b) False
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water

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