Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 436 · 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 does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a flower stem (d) a piece of foil
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a magnet (d) a balloon
4. 4.True or false: a cotton thread lets water climb up it. (a) True (b) False
5. 5.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
7. 7.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a plastic ruler (d) a sugar cube
8. 8.🧺 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 balloon (d) a glass of water
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 the one thing we change. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
11. 11.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a cotton thread
13. 13.⚖️ 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 change it (c) we measure it
14. 14.💧 Which of these does not let water climb? (a) a steel spoon (b) a cotton thread (c) a strip of cloth (d) a piece of chalk
15. 15.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
18. 18.🧺 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) yeast
19. 19.🔍 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 water turns green (d) the petals turn bluish
20. 20.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a glass marble (d) a rubber eraser
21. 21.⚖️ 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 kind of flower (b) the amount of water (c) time for colour to show (d) the length of the stem
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a magnet (d) turmeric powder
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
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 what we measure. (a) False (b) True
27. 27.⚖️ 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 change it (b) we measure it (c) we keep it the same
28. 28.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
29. 29.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a flower stem (d) a cotton thread
30. 30.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ 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 colour (b) time for colour to show (c) the length of the stem (d) the room it stands in
33. 33.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
34. 34.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a glass marble (d) a piece of foil
35. 35.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
36. 36.🔮 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
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
38. 38.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a paper towel
39. 39.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) food colour (d) a few hours of waiting

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