Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 488 · 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.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
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 white flower (c) food colour (d) a mirror
3. 3.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a white flower (d) food colour
6. 6.🔮 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 stay white (d) they turn two colours
7. 7.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) a balloon
9. 9.⚖️ 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 kind of flower (b) the amount of water (c) the length of the stem (d) time for colour to show
10. 10.🌼 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
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a magnet (d) a mirror
13. 13.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
14. 14.⚖️ 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
15. 15.🌼 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
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 change it (b) we measure it (c) we keep it the same
17. 17.True or false: a cotton thread does not let water climb. (a) True (b) False
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a magnet
19. 19.True or false: a rubber eraser lets water climb up it. (a) False (b) True
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
22. 22.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
23. 23.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
24. 24.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
26. 26.🧺 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) a few hours of waiting (d) turmeric powder
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
28. 28.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a glass marble (d) a plastic ruler
29. 29.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
31. 31.True or false: a flower stem lets water climb up it. (a) True (b) False
32. 32.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
33. 33.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a paper towel (c) a piece of foil (d) a glass marble
34. 34.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
35. 35.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a strip of cloth
38. 38.True or false: a strip of cloth does not let water climb. (a) True (b) False
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a mirror (d) food colour
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed

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