Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 574 · 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.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a few hours of waiting (d) a battery cell
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a few hours of waiting
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.True or false: a cotton thread lets water climb up it. (a) False (b) True
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.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a glass of water (d) a white flower
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) turmeric powder (d) a glass of water
10. 10.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
11. 11.True or false: a rubber eraser does not let water climb. (a) False (b) True
12. 12.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
14. 14.True or false: a piece of foil does not let water climb. (a) True (b) False
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
16. 16.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
17. 17.🔮 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 stay white (c) they all turn green (d) they fall off at once
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a cotton thread (d) a paper towel
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a piece of chalk (d) a steel spoon
22. 22.True or false: a paper towel lets water climb up it. (a) True (b) False
23. 23.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
24. 24.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a strip of cloth (d) a piece of chalk
25. 25.True or false: a sugar cube does not let water climb. (a) True (b) False
26. 26.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) food colour (d) a white flower
28. 28.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) food colour (d) a white flower
31. 31.⚖️ 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 length of the stem (b) the room it stands in (c) the amount of colour (d) the kind of flower
32. 32.⚖️ 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
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a rubber eraser (d) a strip of cloth
35. 35.💧 Dip a piece of foil 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 magnet is needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) food colour (d) a few hours of waiting
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a white flower (d) a glass of water

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