Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 643 · 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) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) False (b) True
3. 3.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
5. 5.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
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 turn two colours (c) they all turn green (d) they fall off at once
8. 8.True or false: a rubber eraser does not let water climb. (a) True (b) False
9. 9.⚖️ 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 length of the stem (b) the kind of flower (c) the amount of colour (d) the amount of water
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a balloon (d) a few hours of waiting
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a steel spoon (d) a glass marble
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a few hours of waiting (d) a glass of water
15. 15.⚖️ 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 change it (c) we keep it the same
16. 16.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a few hours of waiting
18. 18.⚖️ 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
19. 19.🔮 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
20. 20.🧺 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 magnet (d) a white flower
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) turmeric powder
23. 23.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a balloon
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a glass of water (d) a few hours of waiting
28. 28.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
33. 33.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a piece of chalk
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a paper towel
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
36. 36.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
37. 37.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
40. 40.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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