Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 131 · 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.⚖️ 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 keep it the same (b) we change it (c) we measure it
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
3. 3.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) yeast (d) a few hours of waiting
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
6. 6.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a piece of chalk
7. 7.⚖️ 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 amount of colour (b) the amount of water (c) the length of the stem (d) time for colour to show
8. 8.True or false: a cotton thread does not let water climb. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a steel spoon (d) a strip of cloth
10. 10.True or false: a paper towel does not let water climb. (a) True (b) False
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
13. 13.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
14. 14.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) food colour
20. 20.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
21. 21.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a battery cell (d) yeast
23. 23.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a sugar cube (d) a flower stem
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a few hours of waiting (d) a glass of water
26. 26.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
27. 27.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a plastic ruler lets water climb up it. (a) True (b) False
29. 29.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a glass of water
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a few hours of waiting (d) food colour
32. 32.⚖️ 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 kept the same. (a) False (b) True
33. 33.True or false: a piece of foil lets water climb up it. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a glass marble (d) a flower stem
35. 35.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.True or false: a flower stem does not let water climb. (a) True (b) False
37. 37.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a steel spoon (d) a paper towel
38. 38.⚖️ 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 what we measure. (a) False (b) True
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
40. 40.🔮 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

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