Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 414 · 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.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they stay white (d) they turn two colours
3. 3.⚖️ 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) True (b) False
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
5. 5.True or false: a piece of chalk does not let water climb. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a balloon (d) a battery cell
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a balloon
8. 8.True or false: a cotton thread lets water climb up it. (a) True (b) False
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
10. 10.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
12. 12.⚖️ 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 measure it (b) we keep it the same (c) we change it
13. 13.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
14. 14.⚖️ 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 kind of flower (c) the length of the stem
15. 15.True or false: turmeric powder is 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? Which of these is the one thing we change? (a) time for colour to show (b) the room it stands in (c) the amount of water (d) the length of the stem
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
18. 18.🌼 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
19. 19.🛟 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
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a glass of water (d) a few hours of waiting
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a white flower (d) a few hours of waiting
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a magnet (d) a battery cell
23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
25. 25.⚖️ 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 the one thing we change. (a) False (b) True
26. 26.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a glass marble (d) a flower stem
28. 28.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a piece of foil (d) a glass marble
29. 29.True or false: a sugar cube does not let water climb. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a steel spoon (d) a strip of cloth
31. 31.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
32. 32.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a piece of foil (d) a piece of chalk
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a flower stem
35. 35.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a flower stem (d) a sugar cube
36. 36.True or false: a piece of foil does not let water climb. (a) False (b) True
37. 37.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
39. 39.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a balloon

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