Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 966 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
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 amount of colour (b) time for colour to show (c) the room it stands in (d) the kind of flower
3. 3.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a flower stem
4. 4.⚖️ 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 length of the stem (c) the amount of water (d) the room it stands in
5. 5.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
6. 6.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a flower stem (d) a plastic ruler
8. 8.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a glass marble (d) a piece of chalk
11. 11.🔮 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 turn two colours (c) they stay white (d) they all turn green
12. 12.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) food colour
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🧺 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 white flower (d) a battery cell
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
17. 17.⚖️ 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
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
20. 20.True or false: a plastic ruler lets water climb up it. (a) False (b) True
21. 21.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a cotton thread (d) a steel spoon
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a few hours of waiting (d) food colour
23. 23.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
24. 24.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
27. 27.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a battery cell (d) a mirror
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
32. 32.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a white flower (d) a few hours of waiting
35. 35.⚖️ 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
36. 36.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
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.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) turmeric powder (d) a few hours of waiting
39. 39.True or false: a glass marble does not let water climb. (a) False (b) True
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour

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