Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 51 · 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 sinks at once (c) it turns to plastic (d) nothing ever happens
2. 2.True or false: a piece of chalk lets water climb up it. (a) True (b) False
3. 3.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a piece of chalk (d) a piece of foil
4. 4.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
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) the kind of flower (b) the length of the stem (c) the amount of colour (d) time for colour to show
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.True or false: a rubber eraser lets water climb up it. (a) False (b) True
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
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.True or false: a sugar cube does not let water climb. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a piece of foil (d) a paper towel
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
15. 15.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a glass marble (d) a steel spoon
16. 16.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a paper towel (d) a sugar cube
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a few hours of waiting
22. 22.🛟 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
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a balloon (d) a magnet
24. 24.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
26. 26.True or false: a flower stem lets water climb up it. (a) True (b) False
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
29. 29.True or false: a glass marble lets water climb up it. (a) False (b) True
30. 30.True or false: a paper towel lets water climb up it. (a) True (b) False
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a balloon (d) turmeric powder
33. 33.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
34. 34.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
35. 35.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a plastic ruler (d) a flower stem
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a few hours of waiting (d) a glass of water
37. 37.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a piece of foil (d) a plastic ruler
39. 39.⚖️ 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 kept the same. (a) False (b) True
40. 40.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False

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