Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 932 · 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.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a paper towel (d) a plastic ruler
2. 2.⚖️ 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 amount of water (b) the room it stands in (c) time for colour to show (d) the kind of flower
3. 3.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a paper towel (d) a glass marble
4. 4.True or false: a steel spoon does not let water climb. (a) True (b) False
5. 5.⚖️ 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 amount of colour (c) the amount of water (d) the length of the stem
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a rubber eraser (d) a paper towel
10. 10.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
11. 11.🧺 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) turmeric powder
12. 12.🛟 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
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a piece of foil
14. 14.⚖️ 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
15. 15.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: a rubber eraser does not let water climb. (a) True (b) False
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 what we measure. (a) True (b) False
18. 18.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.⚖️ 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
20. 20.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) yeast (d) a glass of water
22. 22.⚖️ 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) False (b) True
23. 23.True or false: a piece of chalk does not let water climb. (a) True (b) False
24. 24.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a piece of foil (d) a plastic ruler
26. 26.⚖️ 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
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a few hours of waiting (d) a magnet
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a flower stem (d) a piece of foil
30. 30.True or false: a piece of chalk lets water climb up it. (a) True (b) False
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) food colour
33. 33.True or false: a flower stem lets water climb up it. (a) False (b) True
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) time for colour to show (b) the length of the stem (c) the room it stands in
35. 35.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a rubber eraser (d) a flower stem
36. 36.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a cotton thread (d) a steel spoon
38. 38.💧 Which of these lets water climb up it? (a) a sugar cube (b) a glass marble (c) a piece of foil (d) a plastic ruler
39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a few hours of waiting

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