Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 953 · 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.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.True or false: a paper towel lets water climb up it. (a) False (b) True
5. 5.🔮 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
6. 6.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
9. 9.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a paper towel (d) a piece of chalk
12. 12.⚖️ 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 length of the stem (c) the amount of colour (d) the kind of flower
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a balloon (d) a few hours of waiting
14. 14.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a piece of chalk
15. 15.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a strip of cloth
16. 16.⚖️ 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) True (b) False
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) turmeric powder
18. 18.⚖️ 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
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of chalk (d) a plastic ruler
20. 20.True or false: a piece of foil does not let water climb. (a) False (b) True
21. 21.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
24. 24.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
25. 25.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a paper towel (d) a piece of chalk
27. 27.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
28. 28.True or false: a flower stem lets water climb up it. (a) False (b) True
29. 29.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
34. 34.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a piece of foil (d) a sugar cube
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a strip of cloth
36. 36.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
37. 37.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) food colour (d) a few hours of waiting
39. 39.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a steel spoon (d) a paper towel
40. 40.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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