Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 103 · 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.⚖️ 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 room it stands in (b) time for colour to show (c) the kind of flower (d) the length of the stem
2. 2.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
3. 3.⚖️ 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 measure it (c) we keep it the same
4. 4.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a white flower (d) food colour
6. 6.🔮 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
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a glass marble (d) a rubber eraser
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a glass of water (d) a few hours of waiting
9. 9.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) yeast (d) turmeric powder
11. 11.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a plastic ruler (d) a piece of chalk
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) turmeric powder (d) a white flower
13. 13.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
14. 14.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
15. 15.🔮 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
16. 16.🔮 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
17. 17.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
18. 18.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a steel spoon
19. 19.True or false: a piece of foil lets water climb up it. (a) False (b) True
20. 20.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a magnet
22. 22.🧺 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 few hours of waiting (d) a mirror
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a cotton thread (d) a piece of chalk
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
26. 26.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a battery cell (d) a few hours of waiting
28. 28.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a piece of chalk (d) a strip of cloth
32. 32.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a cotton thread
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.⚖️ 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) True (b) False
37. 37.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a sugar cube (d) a rubber eraser
38. 38.⚖️ 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) time for colour to show (c) the amount of water
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed

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