Capillary Action Flower Experiment Worksheet

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

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