Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 158 · 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.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
3. 3.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
4. 4.🔮 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
5. 5.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a plastic ruler
9. 9.⚖️ 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) False (b) True
10. 10.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
13. 13.🔮 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 turn two colours (c) they all turn green (d) they stay white
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) yeast
15. 15.⚖️ 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) time for colour to show (b) the kind of flower (c) the length of the stem (d) the room it stands in
16. 16.True or false: a cotton thread lets water climb up it. (a) True (b) False
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) the kind of flower (b) the length of the stem (c) the amount of colour (d) time for colour to show
18. 18.⚖️ 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 room it stands in
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a balloon (d) yeast
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) turmeric powder (d) a glass of water
21. 21.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a steel spoon (d) a strip of cloth
22. 22.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a white flower (d) a glass of water
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a white flower (d) food colour
27. 27.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a glass marble (d) a steel spoon
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a white flower (d) food colour
32. 32.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a balloon (d) a white flower
34. 34.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a plastic ruler (d) a piece of foil
35. 35.True or false: a cotton thread does not let water climb. (a) True (b) False
36. 36.⚖️ 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
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
38. 38.⚖️ 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 keep it the same (c) we change it
39. 39.🧺 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
40. 40.⚖️ 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 measure it (c) we keep it the same

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