Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 975 · 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) food colour (b) a white flower (c) a mirror (d) a glass of water
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 kind of flower (b) time for colour to show (c) the amount of colour (d) the length of the stem
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a rubber eraser (d) a paper towel
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.True or false: a paper towel lets water climb up it. (a) True (b) False
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) a magnet (d) turmeric powder
10. 10.⚖️ 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
11. 11.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
12. 12.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a plastic ruler
14. 14.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a cotton thread (d) a plastic ruler
20. 20.⚖️ 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
21. 21.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
22. 22.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a plastic ruler (d) a piece of foil
24. 24.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
25. 25.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a steel spoon (d) a piece of chalk
26. 26.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a piece of chalk (d) a paper towel
27. 27.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a paper towel (d) a sugar cube
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a piece of foil (d) a steel spoon
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a magnet (d) food colour
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
34. 34.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
35. 35.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a mirror (d) a white flower
37. 37.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a piece of foil (d) a glass marble
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a cotton thread (d) a flower stem
40. 40.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True

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