Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 465 · 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.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
2. 2.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) 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.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
6. 6.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
7. 7.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a steel spoon (d) a piece of foil
8. 8.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
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 colour”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.⚖️ 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 kind of flower (c) the room it stands in (d) the length of the stem
12. 12.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the room it stands in (d) the kind of flower
15. 15.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a balloon (d) food colour
17. 17.💧 Dip a strip of cloth 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 sugar cube (b) a cotton thread (c) a piece of chalk (d) a rubber eraser
19. 19.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a rubber eraser (d) a paper towel
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) yeast
26. 26.True or false: a piece of chalk lets water climb up it. (a) False (b) True
27. 27.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a plastic ruler (d) a steel spoon
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) a few hours of waiting
30. 30.🧺 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 white flower
31. 31.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a balloon (d) a white flower
34. 34.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
35. 35.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
36. 36.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
37. 37.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a glass marble
38. 38.⚖️ 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
39. 39.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a cotton thread (d) a strip of cloth
40. 40.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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