Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 52 · 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.⚖️ 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 what we measure. (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 the one thing we change? (a) the room it stands in (b) the length of the stem (c) the amount of colour (d) the kind of flower
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a rubber eraser (d) a steel spoon
4. 4.🔮 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 fall off at once (c) they stay white (d) they turn two colours
5. 5.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a glass of water (d) a white flower
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a magnet (d) food colour
10. 10.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
12. 12.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
13. 13.🌼 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
14. 14.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a cotton thread does not let water climb. (a) False (b) True
16. 16.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
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) the amount of water (b) the length of the stem (c) time for colour to show (d) the kind of flower
20. 20.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
21. 21.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a piece of chalk
22. 22.True or false: a strip of cloth does not let water climb. (a) True (b) False
23. 23.True or false: a flower stem does not let water climb. (a) False (b) True
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a magnet (d) a balloon
25. 25.True or false: a steel spoon lets water climb up it. (a) False (b) True
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a piece of foil (d) a strip of cloth
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a steel spoon (d) a paper towel
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a few hours of waiting (d) food colour
31. 31.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a paper towel (d) a plastic ruler
32. 32.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
33. 33.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🔍 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
37. 37.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) turmeric powder (d) a few hours of waiting
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 kept the same. (a) False (b) True

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