Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 934 · 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: food colour is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
3. 3.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a rubber eraser (d) a glass marble
4. 4.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
5. 5.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a mirror (d) food colour
8. 8.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a piece of chalk (d) a paper towel
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) turmeric powder (d) a balloon
11. 11.True or false: a sugar cube lets water climb up it. (a) True (b) False
12. 12.⚖️ 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 length of the stem (c) the amount of colour (d) time for colour to show
13. 13.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a flower stem (d) a plastic ruler
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a cotton thread lets water climb up it. (a) True (b) False
16. 16.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
17. 17.⚖️ 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
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.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a steel spoon (d) a strip of cloth
20. 20.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) a white flower
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
24. 24.🔍 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
25. 25.True or false: a sugar cube does not let water climb. (a) False (b) True
26. 26.True or false: a steel spoon lets water climb up it. (a) True (b) False
27. 27.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
28. 28.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a few hours of waiting (d) a glass of water
30. 30.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) food colour
32. 32.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a piece of foil (d) a steel spoon
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.⚖️ 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
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a glass marble (d) a piece of foil
37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a piece of foil
38. 38.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a strip of cloth
39. 39.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) food colour (d) a few hours of waiting

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