Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 762 · 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? Which of these is the one thing we change? (a) the kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of colour
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
3. 3.⚖️ 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) False (b) True
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a sugar cube (d) a paper towel
5. 5.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a glass marble (d) a plastic ruler
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a rubber eraser (d) a sugar cube
10. 10.True or false: a cotton thread lets water climb up it. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a balloon (d) food colour
12. 12.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
13. 13.⚖️ 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) False (b) True
14. 14.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a steel spoon (d) a paper towel
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) food colour (d) a magnet
16. 16.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a glass marble (d) a piece of foil
17. 17.True or false: a steel spoon does not let water climb. (a) True (b) False
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) turmeric powder
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
20. 20.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
23. 23.True or false: a flower stem lets water climb up it. (a) True (b) False
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a balloon
25. 25.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
26. 26.⚖️ 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 kind of flower (c) time for colour to show (d) the amount of colour
27. 27.🔮 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
28. 28.⚖️ 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 kept the same. (a) True (b) False
29. 29.🧺 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 magnet (d) food colour
30. 30.⚖️ 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
31. 31.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) turmeric powder (d) food colour
33. 33.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
34. 34.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) yeast
36. 36.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.True or false: a flower stem does not let water climb. (a) True (b) False
38. 38.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
40. 40.True or false: a piece of chalk does not let water climb. (a) False (b) True

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