Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 672 · 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.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.⚖️ 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) False (b) True
4. 4.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a cotton thread (d) a glass marble
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
6. 6.⚖️ 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 what we measure. (a) False (b) True
7. 7.True or false: a sugar cube does not let water climb. (a) True (b) False
8. 8.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
10. 10.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a few hours of waiting
12. 12.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
13. 13.⚖️ 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
14. 14.💧 Which of these does not let water climb? (a) a piece of foil (b) a piece of chalk (c) a cotton thread (d) a flower stem
15. 15.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a flower stem (d) a steel spoon
17. 17.⚖️ 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
18. 18.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
22. 22.True or false: a piece of foil lets water climb up it. (a) False (b) True
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
24. 24.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a steel spoon (d) a strip of cloth
25. 25.⚖️ 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
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
27. 27.True or false: a strip of cloth lets water climb up it. (a) False (b) True
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a white flower (d) a glass of water
29. 29.🔮 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
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) food colour (d) a few hours of waiting
32. 32.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
33. 33.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a cotton thread (d) a strip of cloth
34. 34.⚖️ 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 kind of flower (b) the room it stands in (c) the length of the stem (d) the amount of colour
35. 35.True or false: a rubber eraser lets water climb up it. (a) False (b) True
36. 36.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) yeast (d) food colour
38. 38.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a glass marble (d) a steel spoon
40. 40.⚖️ 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

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