Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 897 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) food colour
2. 2.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.⚖️ 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) True (b) False
4. 4.⚖️ 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
5. 5.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a paper towel (d) a rubber eraser
6. 6.🔮 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 stay white (c) they turn two colours (d) they fall off at once
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
8. 8.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a few hours of waiting (d) a white flower
12. 12.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a piece of foil (d) a rubber eraser
13. 13.True or false: a steel spoon does not let water climb. (a) False (b) True
14. 14.True or false: a plastic ruler lets water climb up it. (a) True (b) False
15. 15.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
16. 16.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
18. 18.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of chalk (c) a plastic ruler (d) a steel spoon
19. 19.⚖️ 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 kind of flower (c) the amount of water (d) time for colour to show
20. 20.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a strip of cloth (d) a cotton thread
21. 21.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
22. 22.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a flower stem (d) a piece of foil
24. 24.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.⚖️ 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 kind of flower (b) time for colour to show (c) the room it stands in (d) the length of the stem
26. 26.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
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.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a magnet (d) a glass of water
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a balloon (d) a glass of water
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.⚖️ 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
36. 36.True or false: a plastic ruler does not let water climb. (a) True (b) False
37. 37.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
39. 39.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.True or false: a paper towel lets water climb up it. (a) True (b) False

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