Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 970 · 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.🔮 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 stay white (c) they turn two colours (d) they all turn green
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a piece of chalk (d) a steel spoon
4. 4.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
5. 5.⚖️ 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) the kind of flower (c) time for colour to show
6. 6.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
8. 8.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
10. 10.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a flower stem (d) a sugar cube
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
13. 13.True or false: a steel spoon does not let water climb. (a) False (b) True
14. 14.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a magnet
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
17. 17.True or false: a piece of chalk does not let water climb. (a) False (b) True
18. 18.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a plastic ruler (d) a paper towel
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
22. 22.⚖️ 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 amount of colour (b) the amount of water (c) time for colour to show (d) the kind of flower
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a battery cell (d) food colour
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) a white flower
25. 25.⚖️ 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) the amount of colour (c) time for colour to show
26. 26.True or false: a piece of foil does not let water climb. (a) False (b) True
27. 27.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
28. 28.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
29. 29.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a steel spoon (d) a piece of foil
31. 31.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) turmeric powder (d) a battery cell
34. 34.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a paper towel
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
38. 38.True or false: a paper towel does not let water climb. (a) False (b) True
39. 39.⚖️ 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
40. 40.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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