Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 350 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a glass of water (d) a few hours of waiting
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a mirror (d) a white flower
5. 5.🛟 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
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
8. 8.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a mirror (d) a few hours of waiting
10. 10.⚖️ 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 measure it (c) we keep it the same
11. 11.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.⚖️ 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) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a few hours of waiting
14. 14.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a glass marble (d) a steel spoon
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a rubber eraser (d) a piece of foil
17. 17.True or false: a strip of cloth does not let water climb. (a) True (b) False
18. 18.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a strip of cloth
19. 19.⚖️ 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) True (b) False
20. 20.True or false: a plastic ruler lets water climb up it. (a) False (b) True
21. 21.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) yeast (d) a glass of water
23. 23.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a glass of water (d) a few hours of waiting
25. 25.⚖️ 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
26. 26.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
27. 27.⚖️ 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 length of the stem (b) the amount of water (c) the room it stands in (d) the amount of colour
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a piece of foil (d) a glass marble
31. 31.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
32. 32.💧 Which of these does not let water climb? (a) a steel spoon (b) a sugar cube (c) a paper towel (d) a strip of cloth
33. 33.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a strip of cloth (d) a cotton thread
34. 34.⚖️ 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 water (b) the amount of colour (c) the kind of flower (d) time for colour to show
35. 35.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
37. 37.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
38. 38.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
40. 40.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a cotton thread (d) a strip of cloth

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