Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 390 · 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? True or false: the kind of flower is kept the same. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a flower stem
3. 3.⚖️ 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
4. 4.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a strip of cloth (d) a rubber eraser
5. 5.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a piece of chalk
6. 6.⚖️ 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 amount of water
7. 7.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour (d) the amount of water
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.True or false: a sugar cube does not let water climb. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a steel spoon
11. 11.True or false: a paper towel does not let water climb. (a) False (b) True
12. 12.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
14. 14.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: a steel spoon does not let water climb. (a) True (b) False
17. 17.⚖️ 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
18. 18.🧺 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 battery cell
19. 19.🔍 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
20. 20.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ 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 the one thing we change. (a) True (b) False
22. 22.⚖️ 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 amount of water (d) the room it stands in
23. 23.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a paper towel
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a strip of cloth (d) a cotton thread
25. 25.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a white flower (d) food colour
28. 28.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
32. 32.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
33. 33.🔮 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
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a paper towel (d) a piece of chalk
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a piece of foil
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a mirror (d) a few hours of waiting
38. 38.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a paper towel (d) a piece of chalk
39. 39.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a paper towel
40. 40.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a plastic ruler (d) a glass marble

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