Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 755 · 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.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
2. 2.True or false: a cotton thread lets water climb up it. (a) True (b) False
3. 3.⚖️ 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 water (b) time for colour to show (c) the length of the stem (d) the kind of flower
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a glass of water
6. 6.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
7. 7.True or false: a piece of chalk does not let water climb. (a) False (b) True
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a sugar cube (d) a plastic ruler
9. 9.⚖️ 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
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a magnet (d) a few hours of waiting
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
13. 13.⚖️ 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
14. 14.True or false: a steel spoon lets water climb up it. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a piece of chalk (d) a glass marble
16. 16.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) yeast (d) a white flower
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a mirror (d) a magnet
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 room it stands in (b) time for colour to show (c) the length of the stem
20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
21. 21.True or false: a flower stem does not let water climb. (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.True or false: a flower stem lets water climb up it. (a) True (b) False
24. 24.⚖️ 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
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.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a sugar cube lets water climb up it. (a) True (b) False
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a few hours of waiting (d) a glass of water
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a flower stem (d) a rubber eraser
31. 31.True or false: a sugar cube does not let water climb. (a) False (b) True
32. 32.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a cotton thread (d) a sugar cube
33. 33.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
37. 37.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
38. 38.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
39. 39.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a cotton thread (d) a flower stem

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