Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 87 · 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.⚖️ 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 room it stands in (b) the length of the stem (c) the amount of water (d) the amount of colour
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
3. 3.⚖️ 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
4. 4.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a steel spoon
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) yeast (d) a magnet
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
8. 8.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) turmeric powder
11. 11.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
12. 12.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
15. 15.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of foil (c) a flower stem (d) a paper towel
16. 16.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a steel spoon (d) a glass marble
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a balloon (d) a magnet
20. 20.⚖️ 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) time for colour to show (c) the room it stands in (d) the kind of flower
21. 21.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they stay white (d) they all turn green
22. 22.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a glass marble (d) a paper towel
23. 23.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a glass marble (d) a flower stem
25. 25.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
27. 27.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a rubber eraser (d) a plastic ruler
29. 29.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a strip of cloth (d) a sugar cube
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) yeast
33. 33.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
34. 34.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a plastic ruler
35. 35.True or false: a sugar cube does not let water climb. (a) True (b) False
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) food colour (d) a balloon
37. 37.True or false: a glass marble does not let water climb. (a) True (b) False
38. 38.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a piece of foil (d) a flower stem
40. 40.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False

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