Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 329 · 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 not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a few hours of waiting (d) food colour
2. 2.⚖️ 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 length of the stem (c) the room it stands in (d) the kind of flower
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
4. 4.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of water
5. 5.🔮 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 fall off at once (c) they turn two colours (d) they stay white
6. 6.True or false: a piece of foil lets water climb up it. (a) True (b) False
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a piece of chalk does not let water climb. (a) False (b) True
10. 10.⚖️ 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 kind of flower (b) time for colour to show (c) the room it stands in (d) the length of the stem
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
12. 12.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a piece of foil (d) a steel spoon
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
14. 14.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
15. 15.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
16. 16.⚖️ 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 change it (c) we measure it
17. 17.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
18. 18.True or false: a paper towel lets water climb up it. (a) False (b) True
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a piece of chalk
20. 20.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a steel spoon (c) a plastic ruler (d) a rubber eraser
21. 21.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
22. 22.⚖️ 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 measure it (c) we change it
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a piece of chalk
25. 25.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
29. 29.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a piece of chalk (d) a steel spoon
30. 30.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a glass marble (d) a paper towel
31. 31.True or false: a paper towel does not let water climb. (a) True (b) False
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a mirror
33. 33.True or false: a rubber eraser lets water climb up it. (a) True (b) False
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a paper towel (d) a cotton thread
38. 38.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a glass of water (d) turmeric powder

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