Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 821 · 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.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a mirror (d) a glass of water
3. 3.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.⚖️ 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 amount of water (b) time for colour to show (c) the amount of colour (d) the length of the stem
9. 9.True or false: a piece of foil lets water climb up it. (a) False (b) True
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a few hours of waiting (d) food colour
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a magnet (d) a glass of water
12. 12.⚖️ 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) time for colour to show (c) the length of the stem
13. 13.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a plastic ruler (d) a rubber eraser
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
16. 16.True or false: a flower stem does not let water climb. (a) False (b) True
17. 17.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they all turn green (d) they turn two colours
18. 18.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
19. 19.⚖️ 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 kept the same. (a) True (b) False
20. 20.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) food colour (d) a white flower
23. 23.True or false: a cotton thread does not let water climb. (a) False (b) True
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
25. 25.⚖️ 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 amount of colour (d) the amount of water
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
28. 28.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) yeast
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
31. 31.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a paper towel (d) a strip of cloth
33. 33.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a piece of chalk
34. 34.⚖️ 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
35. 35.💧 Which of these does not let water climb? (a) a glass marble (b) a strip of cloth (c) a flower stem (d) a piece of chalk
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a mirror (d) a few hours of waiting
37. 37.True or false: a steel spoon does not let water climb. (a) False (b) True
38. 38.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a steel spoon (d) a strip of cloth
39. 39.True or false: a sugar cube does not let water climb. (a) False (b) True
40. 40.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed

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