Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 552 · 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 piece of chalk lets water climb up it. (a) True (b) False
2. 2.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a cotton thread
3. 3.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a piece of foil (d) a glass marble
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a white flower (d) food colour
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
6. 6.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
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 change it (b) we keep it the same (c) we measure it
8. 8.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
9. 9.⚖️ 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) False (b) True
10. 10.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
11. 11.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
13. 13.⚖️ 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
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) turmeric powder (d) a glass of water
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.⚖️ 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 amount of colour (c) the kind of flower (d) time for colour to show
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
20. 20.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a glass marble (d) a piece of foil
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a glass of water (d) food colour
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a balloon (d) a few hours of waiting
25. 25.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a strip of cloth (d) a paper towel
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a white flower (d) a few hours of waiting
28. 28.True or false: a steel spoon lets water climb up it. (a) True (b) False
29. 29.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a steel spoon (d) a paper towel
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) yeast
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a glass of water (d) food colour
33. 33.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they stay white (d) they all turn green
34. 34.⚖️ 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
35. 35.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a rubber eraser (d) a piece of chalk
36. 36.⚖️ 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 what we measure. (a) False (b) True
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
38. 38.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
40. 40.True or false: a paper towel does not let water climb. (a) True (b) False

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