Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 205 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a magnet (d) a white flower
3. 3.⚖️ 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 length of the stem (b) the kind of flower (c) the amount of water (d) the amount of colour
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.⚖️ 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 kept the same. (a) False (b) True
6. 6.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a paper towel
8. 8.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
9. 9.⚖️ 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 amount of colour
10. 10.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a flower stem (d) a cotton thread
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a glass of water (d) a few hours of waiting
14. 14.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🧺 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) a mirror
16. 16.🧺 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 white flower (d) turmeric powder
17. 17.⚖️ 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 room it stands in (c) the length of the stem
18. 18.True or false: a flower stem lets water climb up it. (a) False (b) True
19. 19.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a sugar cube (c) a piece of foil (d) a steel spoon
20. 20.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
21. 21.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
23. 23.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
24. 24.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
25. 25.⚖️ 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) False (b) True
26. 26.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a cotton thread
27. 27.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a paper towel (d) a strip of cloth
28. 28.⚖️ 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 what we measure. (a) True (b) False
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a piece of foil (d) a plastic ruler
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a cotton thread (d) a sugar cube
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 the one thing we change. (a) True (b) False
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) a white flower
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.True or false: a rubber eraser lets water climb up it. (a) False (b) True
36. 36.🔮 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 stay white (d) they turn two colours
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
38. 38.💧 Which of these lets water climb up it? (a) a paper towel (b) a piece of foil (c) a glass marble (d) a rubber eraser
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) yeast (d) food colour
40. 40.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a sugar cube

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