Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 222 · 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 flower stem lets water climb up it. (a) True (b) False
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a few hours of waiting (d) a glass of water
3. 3.True or false: a strip of cloth lets water climb up it. (a) True (b) False
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
5. 5.⚖️ 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 kept the same. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a few hours of waiting (d) yeast
7. 7.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a flower stem (d) a glass marble
8. 8.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
10. 10.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a rubber eraser (d) a plastic ruler
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
12. 12.True or false: a glass marble does not let water climb. (a) True (b) False
13. 13.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a magnet (d) a white flower
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a white flower (d) a few hours of waiting
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
20. 20.True or false: a strip of cloth does not let water climb. (a) False (b) True
21. 21.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
23. 23.🔮 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 all turn green (d) they turn two colours
24. 24.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
27. 27.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.⚖️ 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
29. 29.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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 colour (b) the amount of water (c) time for colour to show (d) the kind of flower
32. 32.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a piece of foil
33. 33.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a plastic ruler
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
36. 36.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a cotton thread (d) a sugar cube
37. 37.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a strip of cloth
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) food colour (d) a few hours of waiting
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a paper towel
40. 40.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands

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