Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 246 · 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 paper towel (b) a piece of chalk (c) a steel spoon (d) a flower stem
2. 2.🧺 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
3. 3.⚖️ 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
4. 4.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) food colour
7. 7.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a paper towel (d) a piece of foil
8. 8.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a paper towel (d) a rubber eraser
9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
11. 11.⚖️ 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) True (b) False
12. 12.⚖️ 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) time for colour to show (c) the room it stands in (d) the amount of water
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
14. 14.🔮 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
15. 15.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a battery cell
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
19. 19.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a cotton thread
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
21. 21.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
24. 24.🌼 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
25. 25.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a piece of foil (d) a steel spoon
26. 26.True or false: a glass marble lets water climb up it. (a) True (b) False
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) time for colour to show (b) the length of the stem (c) the amount of colour
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a flower stem (d) a steel spoon
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 length of the stem (b) the amount of water (c) time for colour to show
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a flower stem (d) a plastic ruler
31. 31.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
32. 32.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
33. 33.True or false: a cotton thread lets water climb up it. (a) True (b) False
34. 34.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
35. 35.⚖️ 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) the amount of colour (c) the length of the stem (d) the kind of flower
36. 36.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a cotton thread (d) a rubber eraser
37. 37.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) a magnet (d) yeast
39. 39.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a balloon (d) food colour

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