Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 624 · 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.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
2. 2.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
4. 4.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
5. 5.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
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 battery cell (d) a white flower
8. 8.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
9. 9.⚖️ 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 colour (b) the amount of water (c) time for colour to show (d) the length of the stem
10. 10.🌼 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
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) food colour (d) a few hours of waiting
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
14. 14.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a battery cell (d) a few hours of waiting
16. 16.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a white flower (d) a magnet
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a balloon (d) food colour
19. 19.🧺 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
20. 20.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
22. 22.⚖️ 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 kept the same. (a) True (b) False
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a white flower (d) a few hours of waiting
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) turmeric powder (d) yeast
26. 26.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
27. 27.⚖️ 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
28. 28.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a cotton thread (d) a sugar cube
30. 30.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
31. 31.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
32. 32.🧺 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
33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
34. 34.⚖️ 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) True (b) False
35. 35.⚖️ 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 kind of flower
36. 36.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
37. 37.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a cotton thread
38. 38.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
39. 39.True or false: a sugar cube does not let water climb. (a) True (b) False
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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