Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 748 · 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 sugar cube does not let water climb. (a) False (b) True
2. 2.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a plastic ruler (d) a piece of chalk
3. 3.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a cotton thread (d) a steel spoon
6. 6.True or false: a glass marble lets water climb up it. (a) True (b) False
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) food colour
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a paper towel
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a piece of foil (d) a rubber eraser
10. 10.True or false: a steel spoon does not let water climb. (a) True (b) False
11. 11.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
15. 15.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🔮 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 turn two colours (c) they all turn green (d) they fall off at once
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 flower stem (c) a strip of cloth (d) a steel spoon
19. 19.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
20. 20.⚖️ 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 measure it (c) we change it
21. 21.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
23. 23.⚖️ 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 room it stands in
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a piece of foil
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
26. 26.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
29. 29.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a plastic ruler (d) a piece of foil
31. 31.⚖️ 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 length of the stem (b) the amount of colour (c) the room it stands in (d) the kind of flower
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
33. 33.⚖️ 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) True (b) False
34. 34.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a steel spoon lets water climb up it. (a) True (b) False
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) turmeric powder (d) a magnet
37. 37.True or false: a cotton thread does not let water climb. (a) True (b) False
38. 38.True or false: a cotton thread lets water climb up it. (a) True (b) False
39. 39.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a mirror (d) a few hours of waiting

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