Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 226 · 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: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a mirror (d) a balloon
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) food colour (d) a glass of water
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 colour (b) time for colour to show (c) the kind of flower (d) the room it stands in
6. 6.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a flower stem (d) a steel spoon
7. 7.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a cotton thread
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
11. 11.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a piece of chalk
12. 12.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) yeast
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a flower stem (d) a cotton thread
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a few hours of waiting (d) food colour
18. 18.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a glass marble (d) a strip of cloth
20. 20.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
21. 21.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a rubber eraser (d) a piece of foil
24. 24.⚖️ 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
25. 25.🔮 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
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) yeast
27. 27.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
29. 29.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) yeast (d) food colour
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
33. 33.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a sugar cube (d) a steel spoon
34. 34.True or false: a glass marble does not let water climb. (a) False (b) True
35. 35.True or false: a plastic ruler does not let water climb. (a) False (b) True
36. 36.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
37. 37.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a piece of foil (d) a plastic ruler

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