Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 211 · 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) turmeric powder (c) a few hours of waiting (d) a glass of water
2. 2.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
3. 3.⚖️ 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 kind of flower (b) the length of the stem (c) the room it stands in (d) the amount of water
4. 4.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
5. 5.True or false: a strip of cloth does not let water climb. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) food colour (d) yeast
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a magnet (d) yeast
8. 8.🔮 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
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
10. 10.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a battery cell (d) a glass of water
13. 13.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) a balloon
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a few hours of waiting
16. 16.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ 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
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a strip of cloth (d) a plastic ruler
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a mirror (d) a glass of water
21. 21.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a glass of water (d) food colour
23. 23.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a paper towel (d) a piece of chalk
24. 24.True or false: a paper towel lets water climb up it. (a) True (b) False
25. 25.⚖️ 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
26. 26.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
27. 27.💧 Which of these lets water climb up it? (a) a sugar cube (b) a piece of foil (c) a glass marble (d) a rubber eraser
28. 28.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
29. 29.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
30. 30.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
31. 31.True or false: a piece of chalk does not let water climb. (a) True (b) False
32. 32.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a paper towel (d) a piece of foil
33. 33.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.True or false: a piece of foil does not let water climb. (a) False (b) True
35. 35.⚖️ 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 the one thing we change. (a) False (b) True
36. 36.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of water
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 kept the same. (a) True (b) False
39. 39.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
40. 40.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue

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