Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 170 · 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 not needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) food colour (d) a white flower
3. 3.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a sugar cube (d) a piece of chalk
4. 4.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a glass marble (d) a strip of cloth
5. 5.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a piece of chalk (d) a plastic ruler
6. 6.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.⚖️ 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) time for colour to show (c) the length of the stem (d) the amount of colour
8. 8.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
9. 9.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
10. 10.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
11. 11.🧺 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) a few hours of waiting (d) a balloon
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
15. 15.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
16. 16.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
17. 17.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
18. 18.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
19. 19.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: a piece of chalk does not let water climb. (a) False (b) True
21. 21.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a paper towel (c) a glass marble (d) a steel spoon
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a few hours of waiting (d) yeast
23. 23.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a battery cell
27. 27.⚖️ 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
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
30. 30.💧 Which of these lets water climb up it? (a) a cotton thread (b) a rubber eraser (c) a piece of foil (d) a steel spoon
31. 31.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a glass marble (d) a strip of cloth
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
33. 33.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
34. 34.True or false: a cotton thread does not let water climb. (a) True (b) False
35. 35.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a steel spoon (d) a paper towel
36. 36.True or false: a plastic ruler does not let water climb. (a) True (b) False
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) time for colour to show (b) the length of the stem (c) the kind of flower
38. 38.🧺 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
39. 39.True or false: a piece of foil does not let water climb. (a) False (b) True
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False

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