Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 428 · 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 is the odd one out? (a) a sugar cube (b) a cotton thread (c) a flower stem (d) a rubber eraser
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
3. 3.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a piece of foil (d) a paper towel
4. 4.True or false: a piece of foil lets water climb up it. (a) True (b) False
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
6. 6.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a piece of chalk
7. 7.⚖️ 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
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
10. 10.⚖️ 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) time for colour to show (c) the amount of water (d) the kind of flower
11. 11.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a magnet (d) food colour
14. 14.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a balloon (d) a few hours of waiting
16. 16.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a sugar cube (d) a piece of foil
17. 17.🛟 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
18. 18.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a balloon (d) a few hours of waiting
20. 20.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
22. 22.True or false: a cotton thread does not let water climb. (a) False (b) True
23. 23.⚖️ 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 length of the stem (c) the kind of flower (d) the room it stands in
24. 24.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
25. 25.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a white flower (d) food colour
31. 31.⚖️ 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) False (b) True
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
33. 33.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the room it stands in
35. 35.⚖️ 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
36. 36.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
37. 37.⚖️ 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
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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