Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 665 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
2. 2.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
3. 3.True or false: turmeric powder is not 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 room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a paper towel
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 fall off at once (b) they all turn green (c) they stay white (d) they turn two colours
7. 7.⚖️ 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 length of the stem (c) the amount of colour (d) the room it stands in
8. 8.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a cotton thread
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a mirror (d) yeast
10. 10.True or false: a piece of foil does not let water climb. (a) True (b) False
11. 11.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.⚖️ 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 change it (b) we keep it the same (c) we measure it
13. 13.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
14. 14.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a strip of cloth
15. 15.True or false: a strip of cloth does not let water climb. (a) False (b) True
16. 16.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a paper towel
17. 17.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
18. 18.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a piece of foil (d) a flower stem
19. 19.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
20. 20.⚖️ 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 amount of water
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
22. 22.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.⚖️ 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
24. 24.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a steel spoon
25. 25.True or false: a plastic ruler lets water climb up it. (a) True (b) False
26. 26.🔮 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
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) food colour (d) turmeric powder
28. 28.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
29. 29.⚖️ 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 amount of water (b) the amount of colour (c) time for colour to show (d) the length of the stem
30. 30.🧺 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 glass of water (d) turmeric powder
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a magnet (d) turmeric powder
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) yeast
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
34. 34.⚖️ 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) time for colour to show (c) the room it stands in
35. 35.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a glass marble (d) a strip of cloth
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a cotton thread
38. 38.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
40. 40.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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