Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 327 · 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 needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) yeast (d) a battery cell
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
4. 4.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
5. 5.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
6. 6.⚖️ 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
7. 7.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a strip of cloth (d) a glass marble
9. 9.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the amount of water
10. 10.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
11. 11.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
12. 12.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a glass marble (d) a piece of chalk
13. 13.⚖️ 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) False (b) True
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
15. 15.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) food colour
17. 17.True or false: a rubber eraser does not let water climb. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a sugar cube (d) a paper towel
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.⚖️ 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) False (b) True
23. 23.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of chalk (d) a glass marble
24. 24.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a mirror (d) a few hours of waiting
26. 26.⚖️ 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) False (b) True
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
28. 28.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a paper towel
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
31. 31.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
32. 32.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a strip of cloth
33. 33.⚖️ 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 amount of colour (c) the length of the stem (d) the room it stands in
34. 34.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
36. 36.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a steel spoon (d) a strip of cloth
38. 38.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a plastic ruler (d) a flower stem
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a glass of water (d) turmeric powder

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