Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 275 · 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.⚖️ 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) True (b) False
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) yeast (d) a few hours of waiting
3. 3.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a rubber eraser (d) a plastic ruler
5. 5.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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) the amount of water (c) the length of the stem (d) the kind of flower
7. 7.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
8. 8.⚖️ 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 water (b) the room it stands in (c) time for colour to show (d) the kind of flower
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
10. 10.🧺 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 balloon
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a mirror
12. 12.⚖️ 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 change it (b) we keep it the same (c) we measure it
13. 13.True or false: a glass marble lets water climb up it. (a) True (b) False
14. 14.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
15. 15.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
16. 16.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ 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
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
19. 19.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a piece of foil (d) a steel spoon
21. 21.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a glass marble
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) food colour (d) a white flower
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a glass of water (d) food colour
24. 24.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
25. 25.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
27. 27.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
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 length of the stem (c) the kind of flower
29. 29.True or false: a flower stem lets water climb up it. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a sugar cube (d) a cotton thread
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) food colour (d) a glass of water
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) turmeric powder (d) a white flower
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a piece of chalk (d) a steel spoon
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 change it (b) we measure it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a piece of foil
37. 37.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a flower stem (d) a paper towel
39. 39.True or false: a strip of cloth does not let water climb. (a) True (b) False
40. 40.🔮 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

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