Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 206 · 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.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
2. 2.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a steel spoon (d) a plastic ruler
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a battery cell
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
13. 13.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
14. 14.🌼 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
15. 15.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
16. 16.True or false: a cotton thread lets water climb up it. (a) False (b) True
17. 17.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
18. 18.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a piece of chalk (d) a paper towel
19. 19.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a cotton thread
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a glass of water (d) a few hours of waiting
24. 24.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a piece of foil (d) a cotton thread
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) food colour
26. 26.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
27. 27.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) turmeric powder (d) a mirror
29. 29.⚖️ 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
30. 30.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
31. 31.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
33. 33.True or false: a flower stem does not let water climb. (a) False (b) True
34. 34.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.⚖️ 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 amount of colour (c) time for colour to show (d) the length of the stem
36. 36.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🧺 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) turmeric powder (d) a few hours of waiting
38. 38.True or false: a piece of chalk lets water climb up it. (a) False (b) True
39. 39.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a flower stem (c) a glass marble (d) a plastic ruler

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