Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 12 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) food colour (d) a glass of water
2. 2.True or false: a sugar cube lets water climb up it. (a) True (b) False
3. 3.⚖️ 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
4. 4.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
5. 5.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
6. 6.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a strip of cloth (d) a rubber eraser
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a glass of water (d) a white flower
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a plastic ruler (d) a steel spoon
11. 11.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
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 change it (b) we measure it (c) we keep it the same
13. 13.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a plastic ruler does not let water climb. (a) True (b) False
16. 16.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
18. 18.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the amount of colour (d) the kind of flower
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a white flower (d) a few hours of waiting
21. 21.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
22. 22.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a balloon (d) food colour
24. 24.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
26. 26.⚖️ 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
27. 27.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
28. 28.⚖️ 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
29. 29.⚖️ 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) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a piece of foil
31. 31.⚖️ 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 the one thing we change. (a) False (b) True
32. 32.🌼 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
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a mirror
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
35. 35.⚖️ 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) time for colour to show (d) the length of the stem
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
37. 37.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
38. 38.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a flower stem (d) a sugar cube
40. 40.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a strip of cloth (d) a steel spoon

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids