Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 460 · 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 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
2. 2.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
3. 3.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a flower stem (d) a sugar cube
5. 5.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a glass of water (d) a few hours of waiting
7. 7.🔮 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
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
9. 9.⚖️ 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
10. 10.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a glass marble (d) a cotton thread
15. 15.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a piece of foil (d) a flower stem
16. 16.⚖️ 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) time for colour to show (c) the amount of colour
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
18. 18.⚖️ 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 room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
20. 20.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a strip of cloth (d) a glass marble
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a mirror (d) a magnet
22. 22.🔮 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
23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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 kept the same. (a) True (b) False
27. 27.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
28. 28.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a piece of chalk
29. 29.True or false: a plastic ruler does not let water climb. (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 mirror (c) a glass of water (d) a few hours of waiting
31. 31.⚖️ 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
32. 32.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
33. 33.⚖️ 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) True (b) False
34. 34.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
36. 36.💧 Dip a rubber eraser 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 white flower is needed for the coloured flower experiment. (a) True (b) False
38. 38.⚖️ 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) the length of the stem (c) the room it stands in (d) the amount of colour
39. 39.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a plastic ruler (d) a cotton thread
40. 40.🧺 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

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