Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 700 · 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) a glass of water (b) a few hours of waiting (c) a white flower (d) a balloon
2. 2.🛟 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
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a mirror (d) a few hours of waiting
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 kind of flower (b) the length of the stem (c) time for colour to show
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
8. 8.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
10. 10.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a glass marble (d) a plastic ruler
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) yeast (d) a few hours of waiting
12. 12.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a paper towel (d) a rubber eraser
15. 15.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a strip of cloth
17. 17.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
18. 18.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
20. 20.🔍 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 stem turns to ice (d) the water turns green
21. 21.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.True or false: a rubber eraser does not let water climb. (a) False (b) True
24. 24.🔮 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 turn two colours (c) they fall off at once (d) they stay white
25. 25.True or false: a cotton thread does not let water climb. (a) True (b) False
26. 26.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a sugar cube (d) a glass marble
29. 29.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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 kind of flower (c) the length of the stem (d) the amount of colour
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a glass of water
33. 33.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
34. 34.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
35. 35.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) turmeric powder (d) food colour
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a rubber eraser (d) a plastic ruler
39. 39.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed

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