Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 636 · 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? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
3. 3.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.⚖️ 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
6. 6.🔮 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 all turn green (c) they turn two colours (d) they stay white
7. 7.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a piece of chalk (d) a steel spoon
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
9. 9.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a strip of cloth (d) a piece of foil
11. 11.⚖️ 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) the amount of water (c) time for colour to show
12. 12.True or false: a flower stem does not let water climb. (a) True (b) False
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
14. 14.🧺 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 battery cell (d) a glass of water
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
17. 17.True or false: a cotton thread does not let water climb. (a) False (b) True
18. 18.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) a white flower
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a few hours of waiting (d) food colour
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a magnet (d) a balloon
24. 24.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a plastic ruler (d) a cotton thread
25. 25.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a sugar cube
26. 26.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
28. 28.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
29. 29.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.💧 Which of these does not let water climb? (a) a flower stem (b) a rubber eraser (c) a paper towel (d) a sugar cube
31. 31.⚖️ 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) True (b) False
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) turmeric powder (d) a glass of water
33. 33.⚖️ 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 what we measure. (a) False (b) True
34. 34.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
36. 36.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a paper towel
37. 37.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a piece of foil (d) a cotton thread
39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
40. 40.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up

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