Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 319 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a magnet (d) food colour
2. 2.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
3. 3.True or false: a glass marble does not let water climb. (a) True (b) False
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) time for colour to show (b) the room it stands in (c) the length of the stem
5. 5.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
8. 8.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
9. 9.True or false: a steel spoon lets water climb up it. (a) False (b) True
10. 10.⚖️ 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
11. 11.True or false: a paper towel does not let water climb. (a) True (b) False
12. 12.⚖️ 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) time for colour to show (d) the room it stands in
13. 13.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
15. 15.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a sugar cube
19. 19.⚖️ 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 the one thing we change. (a) True (b) False
20. 20.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
21. 21.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) yeast (d) a white flower
24. 24.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a cotton thread
25. 25.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
26. 26.💧 Which of these does not let water climb? (a) a glass marble (b) a piece of chalk (c) a sugar cube (d) a strip of cloth
27. 27.⚖️ 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
28. 28.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a piece of chalk (d) a strip of cloth
29. 29.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
30. 30.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a steel spoon (d) a cotton thread
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) food colour
33. 33.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
34. 34.True or false: a strip of cloth lets water climb up it. (a) True (b) False
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
36. 36.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) food colour
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
39. 39.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
40. 40.🔮 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 turn two colours (d) they fall off at once

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