Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 737 · 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 what we measure? (a) the kind of flower (b) the amount of colour (c) the amount of water (d) time for colour to show
2. 2.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a glass marble (d) a strip of cloth
3. 3.True or false: a flower stem does not let water climb. (a) False (b) True
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) turmeric powder (d) yeast
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) yeast
8. 8.True or false: a glass marble lets water climb up it. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a piece of foil (d) a rubber eraser
10. 10.⚖️ 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 amount of colour (c) the length of the stem
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a sugar cube (d) a glass marble
13. 13.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a piece of chalk
14. 14.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
15. 15.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a piece of foil (d) a plastic ruler
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a glass of water (d) a few hours of waiting
20. 20.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a piece of chalk (d) a plastic ruler
21. 21.True or false: a strip of cloth lets water climb up it. (a) True (b) False
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
23. 23.⚖️ 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 water (b) the room it stands in (c) the length of the stem (d) the kind of flower
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) food colour (d) a white flower
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a glass of water (d) a white flower
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a few hours of waiting (d) a glass of water
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: a cotton thread does not let water climb. (a) False (b) True
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a mirror (d) a balloon
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
36. 36.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show
37. 37.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a glass of water (d) food colour
40. 40.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a sugar cube

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