Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 849 · 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 glass of water is needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
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.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
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) the amount of colour (c) time for colour to show
7. 7.💧 Which of these does not let water climb? (a) a paper towel (b) a steel spoon (c) a cotton thread (d) a sugar cube
8. 8.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
9. 9.🔮 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
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
11. 11.⚖️ 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
12. 12.True or false: a paper towel lets water climb up it. (a) True (b) False
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
14. 14.True or false: a glass marble lets water climb up it. (a) True (b) False
15. 15.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a piece of foil (d) a sugar cube
16. 16.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a sugar cube (d) a flower stem
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a sugar cube (d) a cotton thread
19. 19.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a magnet
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.⚖️ 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
23. 23.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a strip of cloth
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a flower stem (d) a piece of chalk
26. 26.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
29. 29.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a sugar cube (d) a glass marble
31. 31.🛟 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
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a battery cell (d) yeast
34. 34.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a sugar cube
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) food colour (d) a glass of water
37. 37.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) food colour (d) yeast
40. 40.⚖️ 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 amount of water

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