Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 714 · 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 kept the same? (a) the kind of flower (b) time for colour to show (c) the length of the stem
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) food colour (d) a few hours of waiting
4. 4.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
5. 5.True or false: a steel spoon does not let water climb. (a) False (b) True
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
7. 7.⚖️ 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) False (b) True
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.True or false: a cotton thread does not let water climb. (a) True (b) False
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.⚖️ 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 measure it (b) we change it (c) we keep it the same
12. 12.⚖️ 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 water (c) the length of the stem (d) time for colour to show
13. 13.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
14. 14.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
15. 15.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a strip of cloth (d) a plastic ruler
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.True or false: a piece of chalk does not let water climb. (a) True (b) False
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a white flower (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 amount of water is kept the same. (a) True (b) False
22. 22.🧺 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
23. 23.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a steel spoon (d) a piece of chalk
24. 24.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a flower stem lets water climb up it. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a piece of chalk (d) a steel spoon
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.True or false: a sugar cube does not let water climb. (a) False (b) True
31. 31.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
32. 32.⚖️ 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 colour (b) the amount of water (c) the room it stands in (d) the length of the stem
33. 33.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a rubber eraser (d) a paper towel
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) food colour
35. 35.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a cotton thread (d) a plastic ruler
36. 36.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
37. 37.⚖️ 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
38. 38.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) food colour (d) turmeric powder
40. 40.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change

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