Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 109 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a mirror
2. 2.⚖️ 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
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a battery cell
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) a glass of water (d) a few hours of waiting
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a magnet (d) turmeric powder
8. 8.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a flower stem (d) a cotton thread
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a glass marble (d) a cotton thread
10. 10.⚖️ 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
11. 11.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔮 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 turn two colours (d) they fall off at once
14. 14.True or false: a steel spoon does not let water climb. (a) True (b) False
15. 15.🧺 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 mirror (d) food colour
16. 16.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a strip of cloth (d) a steel spoon
17. 17.⚖️ 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 kind of flower (b) the amount of colour (c) time for colour to show (d) the amount of water
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
19. 19.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.⚖️ 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) True (b) False
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
22. 22.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
23. 23.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
24. 24.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a sugar cube
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) a magnet (d) a mirror
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a magnet (d) a battery cell
27. 27.💧 Which of these lets water climb up it? (a) a flower stem (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
29. 29.True or false: a cotton thread lets water climb up it. (a) False (b) True
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a sugar cube lets water climb up it. (a) False (b) True
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a cotton thread
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
35. 35.🌼 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
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
37. 37.🔮 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
38. 38.⚖️ 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
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
40. 40.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False

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