Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 4 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
2. 2.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
3. 3.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
4. 4.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a cotton thread
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a few hours of waiting (d) food colour
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
8. 8.⚖️ 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 kept the same. (a) False (b) True
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a mirror (d) a few hours of waiting
10. 10.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) food colour (d) a white flower
13. 13.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
14. 14.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) food colour (d) yeast
16. 16.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) food colour
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) turmeric powder (d) a white flower
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
21. 21.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they fall off at once (d) they all turn green
22. 22.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour (d) the amount of water
23. 23.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the room it stands in
24. 24.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a strip of cloth
26. 26.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a piece of chalk (d) a piece of foil
27. 27.🔮 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
28. 28.💧 Which of these does not let water climb? (a) a glass marble (b) a flower stem (c) a sugar cube (d) a piece of chalk
29. 29.True or false: a paper towel lets water climb up it. (a) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a piece of foil (d) a plastic ruler
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) a few hours of waiting
32. 32.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show
34. 34.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a paper towel (d) a steel spoon
38. 38.⚖️ 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
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a strip of cloth (d) a steel spoon
40. 40.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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