Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 518 · 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.🧺 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 magnet (d) a white flower
2. 2.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.💧 Which of these does not let water climb? (a) a piece of chalk (b) a glass marble (c) a paper towel (d) a strip of cloth
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.True or false: a mirror is not 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? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a rubber eraser (d) a strip of cloth
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) yeast (d) a glass of water
9. 9.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
10. 10.🔍 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
11. 11.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
12. 12.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a paper towel
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
15. 15.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a sugar cube
16. 16.⚖️ 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 amount of colour (b) the length of the stem (c) the kind of flower (d) the room it stands in
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
20. 20.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a piece of foil
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a glass of water (d) food colour
23. 23.🔮 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 all turn green (d) they fall off at once
24. 24.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a rubber eraser (d) a sugar cube
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) food colour (d) a glass of water
26. 26.⚖️ 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) the amount of colour (c) time for colour to show
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
28. 28.⚖️ 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 kind of flower
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a piece of chalk
30. 30.⚖️ 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
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
32. 32.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.⚖️ 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) the room it stands in (c) time for colour to show
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
37. 37.⚖️ 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 change it (c) we measure it
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a mirror (d) food colour
39. 39.🧺 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 white flower (d) a battery cell
40. 40.⚖️ 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

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