Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 794 · 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? 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
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a cotton thread (d) a paper towel
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
4. 4.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🔮 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
6. 6.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a glass of water
8. 8.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
9. 9.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.True or false: a steel spoon lets water climb up it. (a) True (b) False
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) turmeric powder (d) a glass of water
12. 12.⚖️ 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 amount of colour (c) the length of the stem (d) time for colour to show
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a few hours of waiting (d) a balloon
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a glass marble
15. 15.⚖️ 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) False (b) True
16. 16.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a plastic ruler (d) a paper towel
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) a white flower
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a flower stem (c) a glass marble (d) a steel spoon
20. 20.🔮 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 turn two colours (c) they stay white (d) they fall off at once
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a strip of cloth
23. 23.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) food colour (d) a white flower
25. 25.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a flower stem (d) a piece of chalk
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
28. 28.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a sugar cube (d) a plastic ruler
29. 29.⚖️ 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 what we measure. (a) True (b) False
30. 30.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a sugar cube (d) a strip of cloth
31. 31.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
33. 33.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
34. 34.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a piece of chalk
35. 35.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
36. 36.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
40. 40.⚖️ 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 kept the same. (a) False (b) True

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