Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 734 · 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 lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a paper towel (d) a steel spoon
2. 2.⚖️ 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 room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
3. 3.🔮 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 turn two colours (c) they stay white (d) they all turn green
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) food colour (d) a white flower
5. 5.🧺 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 mirror (d) a few hours of waiting
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) food colour (d) a battery cell
9. 9.⚖️ 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 the one thing we change. (a) True (b) False
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) yeast
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
12. 12.🧺 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) a white flower (d) food colour
13. 13.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) yeast (d) a white flower
15. 15.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
16. 16.🛟 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
17. 17.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.💧 Which of these does not let water climb? (a) a steel spoon (b) a piece of chalk (c) a flower stem (d) a paper towel
19. 19.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a paper towel (d) a rubber eraser
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.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a plastic ruler (d) a cotton thread
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a cotton thread
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
32. 32.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a flower stem
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a magnet (d) a battery cell
34. 34.True or false: a piece of foil does not let water climb. (a) True (b) False
35. 35.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a flower stem (d) a strip of cloth
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a paper towel (d) a sugar cube

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