Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 702 · 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.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
2. 2.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a steel spoon
4. 4.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 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) a glass of water (d) a white flower
6. 6.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a mirror (d) a magnet
9. 9.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
12. 12.True or false: a sugar cube does not let water climb. (a) True (b) False
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) a glass of water
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a glass marble (d) a plastic ruler
15. 15.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
16. 16.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
17. 17.🔮 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
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
19. 19.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
20. 20.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in (d) the kind of flower
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a few hours of waiting (d) a battery cell
22. 22.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show
23. 23.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a magnet (d) food colour
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
31. 31.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
32. 32.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) yeast
34. 34.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a steel spoon lets water climb up it. (a) True (b) False
36. 36.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
37. 37.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a rubber eraser (d) a glass marble
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a balloon (d) food colour
39. 39.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
40. 40.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows

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