Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 662 · 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 battery cell is needed for the coloured flower experiment. (a) False (b) True
2. 2.⚖️ 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 amount of water (c) the length of the stem
3. 3.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.🌼 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
6. 6.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
7. 7.True or false: a flower stem does not let water climb. (a) True (b) False
8. 8.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
10. 10.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
11. 11.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
12. 12.⚖️ 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
13. 13.💧 Which of these does not let water climb? (a) a paper towel (b) a rubber eraser (c) a flower stem (d) a strip of cloth
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) a glass of water (d) a few hours of waiting
16. 16.⚖️ 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 colour (b) the kind of flower (c) the length of the stem (d) time for colour to show
17. 17.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 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 few hours of waiting (d) a balloon
20. 20.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
21. 21.True or false: a piece of chalk does not let water climb. (a) True (b) False
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 amount of colour (c) the length of the stem
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a white flower
24. 24.⚖️ 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 length of the stem (b) the amount of colour (c) the kind of flower (d) time for colour to show
25. 25.True or false: a glass marble lets water climb up it. (a) True (b) False
26. 26.⚖️ 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
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a flower stem (d) a sugar cube
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) turmeric powder
31. 31.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a paper towel
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a mirror
33. 33.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.True or false: a strip of cloth does not let water climb. (a) False (b) True
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a white flower (d) food colour
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
39. 39.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a piece of chalk (d) a rubber eraser
40. 40.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True

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