Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 719 · 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 are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
2. 2.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
3. 3.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
4. 4.⚖️ 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 room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
5. 5.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of foil (c) a flower stem (d) a sugar cube
6. 6.⚖️ 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) the room it stands in (c) time for colour to show
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.True or false: a cotton thread does not let water climb. (a) False (b) True
9. 9.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🧺 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 mirror
11. 11.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a piece of chalk (d) a strip of cloth
12. 12.⚖️ 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
13. 13.True or false: a piece of foil does not let water climb. (a) True (b) False
14. 14.⚖️ 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) False (b) True
15. 15.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a paper towel (d) a flower stem
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a battery cell (d) a mirror
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) food colour (d) a mirror
18. 18.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a strip of cloth
19. 19.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 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 magnet (d) a glass of water
23. 23.🌼 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
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a steel spoon (d) a flower stem
26. 26.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
27. 27.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a cotton thread
29. 29.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a rubber eraser
32. 32.True or false: a paper towel does not let water climb. (a) True (b) False
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) yeast
34. 34.True or false: a rubber eraser does not let water climb. (a) False (b) True
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a glass of water (d) food colour
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a paper towel
37. 37.True or false: a cotton thread lets water climb up it. (a) False (b) True
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a glass of water (d) a mirror
40. 40.True or false: a piece of chalk does not let water climb. (a) True (b) False

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