Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 444 · 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.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
2. 2.True or false: a steel spoon does not let water climb. (a) False (b) True
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a glass of water (d) a white flower
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
5. 5.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a piece of chalk (d) a plastic ruler
6. 6.🧺 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
7. 7.💧 Which of these does not let water climb? (a) a rubber eraser (b) a strip of cloth (c) a piece of chalk (d) a cotton thread
8. 8.⚖️ 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 amount of colour (b) time for colour to show (c) the kind of flower (d) the amount of water
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a glass of water (d) food colour
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a magnet (d) a glass of water
11. 11.⚖️ 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
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) a magnet
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a cotton thread (d) a rubber eraser
15. 15.True or false: a flower stem does not let water climb. (a) False (b) True
16. 16.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
18. 18.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a mirror (d) food colour
21. 21.⚖️ 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) True (b) False
22. 22.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
24. 24.True or false: a paper towel lets water climb up it. (a) True (b) False
25. 25.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a piece of chalk (d) a sugar cube
27. 27.True or false: a sugar cube does not let water climb. (a) True (b) False
28. 28.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 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 glass of water (d) a mirror
30. 30.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a sugar cube (d) a flower stem
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) turmeric powder
32. 32.⚖️ 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
33. 33.⚖️ 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 length of the stem (c) the kind of flower
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) the amount of water (c) time for colour to show
35. 35.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
39. 39.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a plastic ruler (d) a cotton thread

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