Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 105 · 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.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.True or false: a glass marble does not let water climb. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a cotton thread
4. 4.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a rubber eraser (d) a steel spoon
5. 5.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a plastic ruler (d) a paper towel
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
7. 7.🧺 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) food colour (d) a battery cell
8. 8.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a rubber eraser (d) a glass marble
9. 9.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
11. 11.⚖️ 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 room it stands in (d) the kind of flower
12. 12.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
13. 13.True or false: a rubber eraser lets water climb up it. (a) True (b) False
14. 14.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a paper towel (d) a steel spoon
17. 17.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a piece of chalk
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) yeast
24. 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
25. 25.🛟 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
26. 26.True or false: a paper towel lets water climb up it. (a) True (b) False
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a white flower (d) a battery cell
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) food colour
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a glass marble (d) a strip of cloth
30. 30.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
33. 33.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a magnet (d) a battery cell
36. 36.⚖️ 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 room it stands in (b) the kind of flower (c) the amount of colour (d) the length of the stem
37. 37.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a flower stem (d) a plastic ruler
38. 38.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
40. 40.True or false: a strip of cloth does not let water climb. (a) False (b) True

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