Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 535 · 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 few hours of waiting (b) a glass of water (c) a mirror (d) food colour
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a glass marble (d) a strip of cloth
3. 3.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
4. 4.💧 Which of these lets water climb up it? (a) a flower stem (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) yeast (d) a white flower
6. 6.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
7. 7.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.⚖️ 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) time for colour to show (c) the kind of flower (d) the length of the stem
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a mirror (d) a glass of water
10. 10.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
11. 11.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a strip of cloth (d) a rubber eraser
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a glass of water
14. 14.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a steel spoon
15. 15.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
17. 17.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a paper towel (d) a piece of chalk
18. 18.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
21. 21.True or false: a strip of cloth lets water climb up it. (a) True (b) False
22. 22.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
24. 24.True or false: a piece of foil lets water climb up it. (a) True (b) False
25. 25.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
26. 26.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) food colour (d) a mirror
28. 28.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
30. 30.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a steel spoon does not let water climb. (a) False (b) True
33. 33.True or false: a rubber eraser lets water climb up it. (a) False (b) True
34. 34.🧺 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) food colour
35. 35.🧺 Do we need a magnet 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 amount of water”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ 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
38. 38.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a steel spoon (d) a flower stem
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a mirror
40. 40.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic

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