Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 321 · 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? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
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.⚖️ 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 what we measure. (a) True (b) False
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.🔍 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 stem turns to ice (d) the water turns green
7. 7.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a battery cell (d) turmeric powder
9. 9.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a rubber eraser (c) a piece of foil (d) a plastic ruler
10. 10.🔮 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
11. 11.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
12. 12.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a glass marble (d) a flower stem
13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a paper towel (d) a glass marble
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a balloon (d) a white flower
15. 15.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a sugar cube
16. 16.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
18. 18.True or false: a cotton thread does not let water climb. (a) True (b) False
19. 19.True or false: a rubber eraser does not let water climb. (a) False (b) True
20. 20.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.True or false: a strip of cloth does not let water climb. (a) True (b) False
22. 22.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a strip of cloth
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a white flower (d) a few hours of waiting
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a rubber eraser (d) a steel spoon
26. 26.🔮 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
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a few hours of waiting
29. 29.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
30. 30.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
32. 32.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a paper towel (d) a plastic ruler
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a white flower (d) a few hours of waiting
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
35. 35.True or false: a plastic ruler lets water climb up it. (a) False (b) True
36. 36.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the kind of flower (d) the room it stands in
39. 39.True or false: a paper towel does not let water climb. (a) False (b) True
40. 40.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes

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