Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 336 · 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.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) yeast (d) a glass of water
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) turmeric powder
3. 3.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
4. 4.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
5. 5.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a rubber eraser (c) a steel spoon (d) a glass marble
6. 6.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
9. 9.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
10. 10.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a glass marble (d) a flower stem
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
12. 12.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a strip of cloth (d) a rubber eraser
13. 13.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a flower stem (d) a paper towel
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a mirror (d) a magnet
18. 18.True or false: a flower stem lets water climb up it. (a) True (b) False
19. 19.⚖️ 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 the one thing we change. (a) True (b) False
20. 20.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a magnet (d) a mirror
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) turmeric powder
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
25. 25.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a cotton thread
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a steel spoon (d) a glass marble
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a mirror
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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
30. 30.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
31. 31.True or false: a sugar cube does not let water climb. (a) True (b) False
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
33. 33.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
34. 34.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a sugar cube (d) a plastic ruler
36. 36.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 room it stands in (b) the length of the stem (c) the amount of colour (d) the kind of flower
39. 39.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a piece of foil
40. 40.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False

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