Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 467 · 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.True or false: a piece of chalk lets water climb up it. (a) True (b) False
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a flower stem
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
6. 6.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a piece of chalk (d) a steel spoon
7. 7.True or false: a piece of foil does not let water climb. (a) False (b) True
8. 8.🧺 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
9. 9.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
10. 10.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
11. 11.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a piece of chalk (d) a strip of cloth
14. 14.⚖️ 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 the one thing we change. (a) False (b) True
15. 15.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a strip of cloth (d) a glass marble
16. 16.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
18. 18.True or false: a flower stem does not let water climb. (a) True (b) False
19. 19.True or false: a plastic ruler lets water climb up it. (a) True (b) False
20. 20.⚖️ 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 water (b) the kind of flower (c) the length of the stem (d) the amount of colour
21. 21.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
22. 22.⚖️ 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) True (b) False
23. 23.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) turmeric powder
25. 25.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
26. 26.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
28. 28.True or false: a cotton thread lets water climb up it. (a) False (b) True
29. 29.⚖️ 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
30. 30.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 keep it the same (b) we measure it (c) we change it
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
34. 34.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
35. 35.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a strip of cloth
36. 36.🧺 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 balloon
37. 37.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
39. 39.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
40. 40.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet

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