Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 556 · 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 is the odd one out? (a) a glass marble (b) a plastic ruler (c) a flower stem (d) a steel spoon
2. 2.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a piece of foil (d) a piece of chalk
3. 3.🔮 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
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a glass of water (d) food colour
5. 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
6. 6.⚖️ 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 water (b) the length of the stem (c) the room it stands in (d) time for colour to show
7. 7.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a magnet (d) a glass of water
9. 9.🔮 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 stay white (d) they fall off at once
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) yeast (d) a balloon
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a battery cell (d) a few hours of waiting
14. 14.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
16. 16.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
17. 17.🧺 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
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
19. 19.⚖️ 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 amount of water (c) the length of the stem
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
24. 24.🧺 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) food colour (d) a mirror
25. 25.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a sugar cube (d) a plastic ruler
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) the room it stands in (b) time for colour to show (c) the length of the stem
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a steel spoon
28. 28.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
30. 30.⚖️ 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 kind of flower (b) the amount of colour (c) the length of the stem (d) the amount of water
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a white flower
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.True or false: a piece of chalk lets water climb up it. (a) True (b) False
37. 37.⚖️ 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 change it (c) we measure it
38. 38.True or false: a steel spoon lets water climb up it. (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 room it stands in is what we measure. (a) False (b) True
40. 40.True or false: a paper towel lets water climb up it. (a) False (b) True

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