Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 809 · 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? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.⚖️ 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) time for colour to show (b) the amount of colour (c) the length of the stem (d) the kind of flower
3. 3.🔮 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 all turn green (c) they turn two colours (d) they fall off at once
4. 4.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
5. 5.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
8. 8.⚖️ 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 amount of water (c) time for colour to show
9. 9.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a strip of cloth (d) a sugar cube
11. 11.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a paper towel (d) a cotton thread
12. 12.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a balloon (d) a magnet
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a sugar cube lets water climb up it. (a) True (b) False
16. 16.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
17. 17.True or false: a cotton thread does not let water climb. (a) False (b) True
18. 18.⚖️ 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 room it stands in (c) the kind of flower (d) the amount of water
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
20. 20.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a plastic ruler (d) a rubber eraser
21. 21.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
22. 22.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a flower stem (d) a plastic ruler
23. 23.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a sugar cube
24. 24.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a glass of water (d) a magnet
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a strip of cloth
28. 28.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
29. 29.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
30. 30.⚖️ 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 the one thing we change. (a) False (b) True
31. 31.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: a plastic ruler does not let water climb. (a) True (b) False
33. 33.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
35. 35.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
36. 36.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ 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
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
40. 40.True or false: a piece of chalk does not let water climb. (a) True (b) False

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