Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 101 · 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) a glass of water (b) food colour (c) a battery cell (d) a white flower
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
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) the room it stands in (b) time for colour to show (c) the length of the stem
5. 5.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
6. 6.🧺 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) food colour (d) turmeric powder
7. 7.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a piece of chalk (d) a plastic ruler
8. 8.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
9. 9.🔍 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
10. 10.True or false: a piece of chalk lets water climb up it. (a) False (b) True
11. 11.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
14. 14.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
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 white flower (c) yeast (d) a glass of water
16. 16.⚖️ 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
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a white flower (d) a few hours of waiting
19. 19.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a cotton thread (d) a strip of cloth
20. 20.⚖️ 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) the amount of colour (c) the kind of flower (d) the length of the stem
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a flower stem (d) a piece of foil
22. 22.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
24. 24.⚖️ 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) the kind of flower (c) time for colour to show (d) the length of the stem
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a rubber eraser
28. 28.⚖️ 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 amount of colour (c) the length of the stem
29. 29.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a sugar cube (d) a glass marble
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a mirror (d) a white flower
31. 31.True or false: a rubber eraser lets water climb up it. (a) False (b) True
32. 32.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 steel spoon lets water climb up it. (a) True (b) False
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a white flower (d) a few hours of waiting
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a piece of chalk
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a balloon (d) turmeric powder
39. 39.🔮 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
40. 40.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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