Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 767 · 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 does not let water climb? (a) a paper towel (b) a piece of chalk (c) a strip of cloth (d) a steel spoon
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
3. 3.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
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 the one thing we change. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a piece of chalk (d) a cotton thread
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
7. 7.True or false: a plastic ruler lets water climb up it. (a) False (b) True
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a balloon
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
12. 12.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
13. 13.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a piece of foil (d) a steel spoon
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
15. 15.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show (d) the room it stands in
16. 16.⚖️ 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 the one thing we change. (a) False (b) True
17. 17.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a mirror
20. 20.⚖️ 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 kept the same. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a rubber eraser (d) a piece of chalk
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
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) a white flower (d) a battery cell
24. 24.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
25. 25.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a flower stem (d) a rubber eraser
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
27. 27.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
29. 29.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
30. 30.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.⚖️ 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 keep it the same (b) we change it (c) we measure it
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a rubber eraser (d) a plastic ruler
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) a glass of water (d) a few hours of waiting
34. 34.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
35. 35.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a piece of foil (d) a sugar cube
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
37. 37.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a piece of chalk (d) a flower stem
40. 40.⚖️ 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) the length of the stem (c) the room it stands in (d) time for colour to show

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