Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 280 · 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 what we measure? (a) the length of the stem (b) the room it stands in (c) the kind of flower (d) time for colour to show
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
3. 3.🧺 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 balloon
4. 4.True or false: a flower stem does not let water climb. (a) True (b) False
5. 5.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a cotton thread (d) a plastic ruler
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a few hours of waiting (d) a glass of water
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a piece of chalk
8. 8.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a cotton thread (d) a piece of foil
9. 9.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a glass marble (d) a strip of cloth
11. 11.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a white flower
13. 13.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a paper towel (d) a piece of foil
15. 15.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a piece of foil (d) a plastic ruler
16. 16.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
18. 18.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) turmeric powder (d) a white flower
20. 20.⚖️ 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
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a balloon (d) a magnet
23. 23.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a sugar cube (d) a flower stem
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a magnet (d) turmeric powder
27. 27.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a rubber eraser (d) a plastic ruler
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) food colour (d) a few hours of waiting
30. 30.⚖️ 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
31. 31.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
32. 32.⚖️ 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 change it (c) we measure it
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a battery cell
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
36. 36.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
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) True (b) False
38. 38.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
39. 39.True or false: a rubber eraser does not let water climb. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a flower stem (d) a steel spoon

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