Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 148 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a few hours of waiting (d) a white flower
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a paper towel
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a balloon (c) a white flower (d) a battery cell
4. 4.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
6. 6.⚖️ 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 kind of flower (c) the length of the stem (d) the amount of colour
7. 7.True or false: a sugar cube lets water climb up it. (a) False (b) True
8. 8.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
10. 10.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
11. 11.True or false: a piece of foil lets water climb up it. (a) False (b) True
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a battery cell
14. 14.True or false: a plastic ruler does not let water climb. (a) False (b) True
15. 15.⚖️ 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 amount of colour (b) the room it stands in (c) the amount of water (d) time for colour to show
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
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) the length of the stem (b) the kind of flower (c) time for colour to show
18. 18.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
20. 20.⚖️ 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
21. 21.True or false: a flower stem lets water climb up it. (a) True (b) False
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a magnet (d) a balloon
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
24. 24.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
25. 25.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
26. 26.⚖️ 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
27. 27.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a strip of cloth (d) a sugar cube
29. 29.🔮 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
30. 30.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
33. 33.True or false: a cotton thread does not let water climb. (a) False (b) True
34. 34.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a glass marble (d) a rubber eraser
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
40. 40.True or false: a rubber eraser lets water climb up it. (a) False (b) True

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