Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 661 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
2. 2.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a balloon (d) a magnet
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) yeast (d) a balloon
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) food colour
6. 6.⚖️ 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) time for colour to show (b) the room it stands in (c) the kind of flower (d) the length of the stem
7. 7.🔮 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
8. 8.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a glass marble (d) a plastic ruler
10. 10.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
12. 12.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a rubber eraser (d) a cotton thread
13. 13.⚖️ 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 kept the same. (a) True (b) False
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the length of the stem (d) the amount of colour
16. 16.True or false: a glass marble does not let water climb. (a) False (b) True
17. 17.True or false: a steel spoon does not let water climb. (a) False (b) True
18. 18.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
20. 20.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a flower stem (d) a paper towel
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a battery cell (d) a white flower
22. 22.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 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) food colour (d) a battery cell
24. 24.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
27. 27.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
29. 29.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
31. 31.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
32. 32.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a piece of foil (d) a rubber eraser
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a steel spoon (d) a cotton thread
35. 35.True or false: a sugar cube lets water climb up it. (a) False (b) True
36. 36.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
39. 39.True or false: a glass marble lets water climb up it. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed

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