Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 742 · 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 do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
2. 2.⚖️ 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 colour (b) time for colour to show (c) the length of the stem
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
5. 5.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a strip of cloth
6. 6.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a piece of chalk
7. 7.💧 Dip a rubber eraser 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? True or false: the amount of colour is kept the same. (a) False (b) True
9. 9.True or false: a cotton thread does not let water climb. (a) True (b) False
10. 10.⚖️ 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 colour (b) the room it stands in (c) the length of the stem (d) the kind of flower
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a magnet (d) a mirror
12. 12.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
13. 13.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a glass marble (d) a cotton thread
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
19. 19.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a cotton thread (d) a plastic ruler
20. 20.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a sugar cube (d) a piece of foil
21. 21.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a steel spoon
22. 22.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a magnet (d) food colour
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a balloon (d) a magnet
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a battery cell (d) a white flower
28. 28.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a glass of water
30. 30.⚖️ 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) False (b) True
31. 31.True or false: a piece of chalk does not let water climb. (a) False (b) True
32. 32.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a plastic ruler (d) a flower stem
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) food colour (d) a few hours of waiting
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) a glass of water (d) food colour
36. 36.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a sugar cube (d) a piece of chalk
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
38. 38.⚖️ 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 kind of flower (b) the length of the stem (c) the amount of colour (d) time for colour to show
39. 39.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
40. 40.💧 Which of these does not let water climb? (a) a steel spoon (b) a flower stem (c) a sugar cube (d) a paper towel

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