Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 382 · 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.⚖️ 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) True (b) False
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
3. 3.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.⚖️ 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) True (b) False
7. 7.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.True or false: a flower stem lets water climb up it. (a) False (b) True
9. 9.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
10. 10.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
11. 11.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the amount of colour
12. 12.⚖️ 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 measure it (b) we keep it the same (c) we change it
13. 13.⚖️ 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 room it stands in (c) the length of the stem
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a rubber eraser (d) a paper towel
17. 17.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a paper towel (d) a steel spoon
18. 18.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
23. 23.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
26. 26.🔮 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 turn two colours (c) they stay white (d) they all turn green
27. 27.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
28. 28.⚖️ 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
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a strip of cloth (d) a piece of foil
31. 31.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a piece of foil (d) a paper towel
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a strip of cloth (d) a plastic ruler
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) yeast
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.True or false: a steel spoon lets water climb up it. (a) True (b) False
36. 36.⚖️ 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 water (c) the kind of flower (d) time for colour to show
37. 37.True or false: a glass marble does not let water climb. (a) True (b) False
38. 38.True or false: a glass marble lets water climb up it. (a) True (b) False
39. 39.True or false: a piece of chalk lets water climb up it. (a) False (b) True
40. 40.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False

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