Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 933 · 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.🌼 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
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a balloon (d) a glass of water
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a glass of water (d) a few hours of waiting
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) food colour (d) a few hours of waiting
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
6. 6.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a paper towel (d) a steel spoon
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) food colour (d) yeast
9. 9.💧 Which of these does not let water climb? (a) a strip of cloth (b) a rubber eraser (c) a paper towel (d) a piece of chalk
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a steel spoon (d) a piece of foil
11. 11.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
12. 12.True or false: a flower stem does not let water climb. (a) True (b) False
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a balloon (d) a few hours of waiting
14. 14.⚖️ 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
15. 15.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
17. 17.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a glass marble (d) a strip of cloth
18. 18.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
20. 20.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem
21. 21.True or false: a piece of foil lets water climb up it. (a) False (b) True
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
23. 23.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a sugar cube
24. 24.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
25. 25.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
26. 26.⚖️ 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
27. 27.True or false: a strip of cloth does not let water climb. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a rubber eraser (d) a paper towel
29. 29.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
30. 30.⚖️ 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 amount of water (b) the length of the stem (c) time for colour to show
31. 31.True or false: a cotton thread does not let water climb. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a glass of water (d) a white flower
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
34. 34.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
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 kept the same. (a) False (b) True
36. 36.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ 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 change it (c) we keep it the same
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) food colour
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a flower stem

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