Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 557 · 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 few hours of waiting (c) a glass of water (d) yeast
2. 2.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
7. 7.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a sugar cube (d) a rubber eraser
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a few hours of waiting (d) a glass of water
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
12. 12.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
13. 13.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
14. 14.⚖️ 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) time for colour to show (d) the length of the stem
15. 15.True or false: a flower stem does not let water climb. (a) False (b) True
16. 16.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a mirror
18. 18.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a few hours of waiting (d) a white flower
21. 21.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
23. 23.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) turmeric powder (d) a white flower
25. 25.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) turmeric powder (d) yeast
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a mirror (d) a balloon
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
30. 30.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a flower stem (d) a paper towel
32. 32.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
33. 33.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a paper towel
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a piece of chalk
36. 36.🔍 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 flower floats away (d) the stem turns to ice
37. 37.True or false: a sugar cube does not let water climb. (a) True (b) False
38. 38.⚖️ 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
39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a piece of foil
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a plastic ruler (d) a sugar cube

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