Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 216 · 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 is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a glass marble
2. 2.⚖️ 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) the amount of colour (c) the amount of water (d) time for colour to show
3. 3.True or false: a paper towel does not let water climb. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a glass marble (d) a plastic ruler
5. 5.⚖️ 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
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
8. 8.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a few hours of waiting
11. 11.⚖️ 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 change it (b) we measure it (c) we keep it the same
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 keep it the same (b) we change it (c) we measure it
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) food colour (d) a glass of water
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
15. 15.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a piece of chalk (d) a plastic ruler
16. 16.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a magnet
18. 18.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
22. 22.True or false: a glass marble does not let water climb. (a) False (b) True
23. 23.⚖️ 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
24. 24.⚖️ 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 kind of flower (b) the amount of colour (c) time for colour to show (d) the length of the stem
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a balloon (d) a few hours of waiting
26. 26.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a glass marble (d) a plastic ruler
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
28. 28.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: a sugar cube does not let water climb. (a) False (b) True
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a glass of water (d) yeast
33. 33.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a strip of cloth (d) a rubber eraser
34. 34.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
36. 36.⚖️ 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 kind of flower (c) time for colour to show
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a glass of water (d) a few hours of waiting
40. 40.True or false: a flower stem lets water climb up it. (a) False (b) True

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