Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 993 · 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 white flower is needed for the coloured flower experiment. (a) True (b) False
2. 2.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a rubber eraser (d) a strip of cloth
3. 3.⚖️ 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
4. 4.True or false: a sugar cube does not let water climb. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a piece of foil
6. 6.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
7. 7.True or false: a rubber eraser lets water climb up it. (a) False (b) True
8. 8.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a balloon
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
12. 12.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.⚖️ 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 amount of colour (c) the room it stands in (d) the length of the stem
14. 14.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
16. 16.True or false: a cotton thread does not let water climb. (a) False (b) True
17. 17.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
19. 19.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a cotton thread (d) a glass marble
20. 20.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
21. 21.⚖️ 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) False (b) True
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) time for colour to show (b) the length of the stem (c) the room it stands in
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a glass of water (d) food colour
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) yeast (d) food colour
25. 25.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a piece of chalk (d) a sugar cube
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 kept the same. (a) True (b) False
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a glass of water (d) food colour
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) turmeric powder (d) a few hours of waiting
31. 31.True or false: a flower stem lets water climb up it. (a) True (b) False
32. 32.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a glass marble (d) a rubber eraser
33. 33.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
34. 34.💧 Dip a cotton thread 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? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.True or false: a glass marble lets water climb up it. (a) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a mirror (d) a balloon
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic

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