Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 42 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a mirror (d) food colour
4. 4.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
5. 5.True or false: a steel spoon does not let water climb. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a magnet (d) a balloon
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) yeast (d) a glass of water
8. 8.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
9. 9.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
11. 11.True or false: a flower stem lets water climb up it. (a) False (b) True
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a steel spoon
14. 14.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
15. 15.⚖️ 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) time for colour to show (b) the amount of colour (c) the amount of water (d) the length of the stem
16. 16.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🔮 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 stay white (c) they fall off at once (d) they turn two colours
18. 18.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a cotton thread (d) a steel spoon
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
20. 20.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a piece of chalk (d) a strip of cloth
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
23. 23.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
24. 24.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
25. 25.🔮 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
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
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) the length of the stem (b) time for colour to show (c) the amount of colour
28. 28.True or false: a cotton thread lets water climb up it. (a) False (b) True
29. 29.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a piece of foil (d) a cotton thread
30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a strip of cloth (d) a plastic ruler
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
33. 33.🧺 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) food colour (d) a glass of water
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a white flower (d) a few hours of waiting
35. 35.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a piece of foil does not let water climb. (a) False (b) True
37. 37.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: a piece of foil lets water climb up it. (a) True (b) False
39. 39.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a steel spoon
40. 40.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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