Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 358 · 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.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
2. 2.⚖️ 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 water (b) time for colour to show (c) the length of the stem (d) the amount of colour
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a rubber eraser (c) a cotton thread (d) a piece of chalk
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a battery cell (d) a balloon
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a piece of foil
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
8. 8.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a strip of cloth
10. 10.⚖️ 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 room it stands in
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
12. 12.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
14. 14.💧 Which of these does not let water climb? (a) a piece of chalk (b) a steel spoon (c) a paper towel (d) a sugar cube
15. 15.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
16. 16.True or false: a rubber eraser lets water climb up it. (a) True (b) False
17. 17.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
19. 19.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
20. 20.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a piece of foil (d) a sugar cube
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
22. 22.⚖️ 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
23. 23.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
24. 24.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of water (d) the kind of flower
26. 26.🧺 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 few hours of waiting (d) a battery cell
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a mirror (d) a few hours of waiting
28. 28.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
29. 29.True or false: a strip of cloth does not let water climb. (a) True (b) False
30. 30.🔮 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 all turn green (c) they fall off at once (d) they stay white
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
34. 34.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a few hours of waiting (d) food colour
36. 36.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.True or false: a rubber eraser does not let water climb. (a) True (b) False
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a magnet (d) turmeric powder
39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a flower stem (d) a rubber eraser

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