Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 207 · 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.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a glass marble (d) a paper towel
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a glass marble
4. 4.⚖️ 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
5. 5.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) food colour
10. 10.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.⚖️ 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
13. 13.⚖️ 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 kind of flower
14. 14.True or false: a piece of chalk lets water climb up it. (a) True (b) False
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (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 what we measure? (a) time for colour to show (b) the room it stands in (c) the amount of colour (d) the length of the stem
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a balloon (d) food colour
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) food colour
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
24. 24.💧 Dip a steel spoon 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 not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) food colour
26. 26.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a sugar cube (d) a plastic ruler
29. 29.⚖️ 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) the length of the stem (c) time for colour to show
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.⚖️ 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 the one thing we change. (a) True (b) False
32. 32.⚖️ 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
33. 33.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a paper towel (d) a piece of chalk
34. 34.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a flower stem (d) a steel spoon
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a glass marble (d) a cotton thread
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower
39. 39.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) turmeric powder (d) food colour

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