Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 130 · 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 paper towel (b) a plastic ruler (c) a cotton thread (d) a sugar cube
2. 2.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
3. 3.True or false: a rubber eraser does not let water climb. (a) True (b) False
4. 4.⚖️ 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 colour
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a glass of water (d) a battery cell
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
8. 8.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.True or false: a sugar cube lets water climb up it. (a) True (b) False
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a white flower (d) a few hours of waiting
13. 13.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.True or false: a strip of cloth lets water climb up it. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a white flower (d) a glass of water
16. 16.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.True or false: a paper towel lets water climb up it. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a piece of foil (d) a plastic ruler
21. 21.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
22. 22.True or false: a cotton thread does not let water climb. (a) False (b) True
23. 23.True or false: a glass marble does not let water climb. (a) False (b) True
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
25. 25.⚖️ 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 what we measure. (a) False (b) True
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a glass of water (d) food colour
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
29. 29.🔮 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 turn two colours (d) they stay white
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) food colour
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a piece of chalk (d) a piece of foil
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a few hours of waiting (d) food colour
33. 33.⚖️ 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 colour (b) the length of the stem (c) the amount of water (d) the kind of flower
34. 34.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
35. 35.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
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) time for colour to show (b) the length of the stem (c) the amount of water
37. 37.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
38. 38.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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