Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 75 · 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? What do we do with “time for colour to show”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a rubber eraser (d) a piece of chalk
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a plastic ruler (d) a steel spoon
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) yeast (d) a glass of water
7. 7.🔮 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 all turn green (c) they turn two colours (d) they stay white
8. 8.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a few hours of waiting (d) a glass of water
10. 10.True or false: a strip of cloth does not let water climb. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
12. 12.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a sugar cube (d) a flower stem
13. 13.True or false: a rubber eraser does not let water climb. (a) True (b) False
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
15. 15.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a flower stem (d) a glass marble
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 what we measure. (a) False (b) True
20. 20.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a flower stem (d) a rubber eraser
22. 22.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a cotton thread
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a magnet
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a mirror (d) turmeric powder
26. 26.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a cotton thread (d) a steel spoon
27. 27.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
28. 28.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
29. 29.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a glass marble (d) a piece of foil
30. 30.⚖️ 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
31. 31.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) food colour (d) turmeric powder
33. 33.True or false: a strip of cloth lets water climb up it. (a) False (b) True
34. 34.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
35. 35.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a mirror (d) a glass of water
37. 37.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a balloon (d) a white flower
40. 40.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True

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