Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 219 · 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 white flower is needed for the coloured flower experiment. (a) False (b) True
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
3. 3.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a paper towel (d) a flower stem
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a steel spoon (d) a sugar cube
6. 6.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
7. 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
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 kind of flower (b) time for colour to show (c) the length of the stem
9. 9.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
10. 10.🔮 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 fall off at once (c) they turn two colours (d) they all turn green
11. 11.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) yeast
14. 14.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a magnet (d) a mirror
16. 16.⚖️ 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 length of the stem (c) the amount of colour (d) the kind of flower
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a balloon (d) a glass of water
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a white flower (d) a few hours of waiting
20. 20.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a sugar cube (d) a piece of chalk
22. 22.🧺 Do we need food colour 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? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.💧 Dip a piece of chalk 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? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.⚖️ 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) True (b) False
27. 27.True or false: a paper towel does not let water climb. (a) True (b) False
28. 28.⚖️ 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) False (b) True
29. 29.⚖️ 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 kept the same. (a) True (b) False
30. 30.True or false: a sugar cube lets water climb up it. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a flower stem
32. 32.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
33. 33.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a few hours of waiting (d) a mirror
37. 37.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of water
38. 38.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a sugar cube (d) a paper towel
39. 39.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
40. 40.True or false: a rubber eraser does not let water climb. (a) False (b) True

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