Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 566 · 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 change it (b) we measure it (c) we keep it the same
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) food colour (d) a magnet
3. 3.True or false: a cotton thread lets water climb up it. (a) False (b) True
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
5. 5.⚖️ 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 what we measure. (a) False (b) True
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
8. 8.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
9. 9.🔮 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 turn two colours (c) they all turn green (d) they fall off at once
10. 10.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) a few hours of waiting
12. 12.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a strip of cloth
13. 13.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.True or false: a cotton thread does not let water climb. (a) True (b) False
16. 16.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
17. 17.⚖️ 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 amount of water (b) the room it stands in (c) time for colour to show (d) the length of the stem
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a glass of water (d) a few hours of waiting
19. 19.⚖️ 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 length of the stem (b) time for colour to show (c) the kind of flower (d) the amount of colour
20. 20.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
23. 23.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
24. 24.⚖️ 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 kind of flower
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a paper towel (d) a piece of foil
29. 29.⚖️ 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
30. 30.🧺 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 balloon (d) a white flower
31. 31.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
32. 32.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
34. 34.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) yeast (d) a glass of water
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a balloon (d) food colour
37. 37.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a battery cell (d) food colour
39. 39.True or false: a plastic ruler lets water climb up it. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a rubber eraser

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