Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 528 · 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 rubber eraser lets water climb up it. (a) True (b) False
2. 2.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a plastic ruler (d) a cotton thread
4. 4.⚖️ 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) time for colour to show (c) the amount of water
5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a flower stem
6. 6.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a flower stem (d) a sugar cube
7. 7.True or false: a cotton thread does not let water climb. (a) False (b) True
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
10. 10.⚖️ 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 water (b) the length of the stem (c) the kind of flower (d) the room it stands in
11. 11.True or false: a paper towel lets water climb up it. (a) True (b) False
12. 12.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
13. 13.🔮 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 stay white (d) they fall off at once
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a mirror (d) a glass of water
15. 15.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
16. 16.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of chalk (d) a steel spoon
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a battery cell (d) a balloon
18. 18.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a balloon
20. 20.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a paper towel
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a white flower (d) a few hours of waiting
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) the amount of colour (b) the length of the stem (c) time for colour to show
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) yeast
25. 25.⚖️ 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
26. 26.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
27. 27.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
28. 28.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a steel spoon (d) a piece of foil
30. 30.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
31. 31.⚖️ 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) the length of the stem (c) time for colour to show
32. 32.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a sugar cube (d) a rubber eraser
35. 35.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
37. 37.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic

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