Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 341 · 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.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a piece of foil (d) a plastic ruler
3. 3.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
5. 5.🔮 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 fall off at once (c) they all turn green (d) they stay white
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a piece of chalk (d) a cotton thread
8. 8.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
9. 9.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.💧 Which of these does not let water climb? (a) a piece of foil (b) a flower stem (c) a cotton thread (d) a piece of chalk
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a balloon (d) a magnet
17. 17.True or false: a sugar cube lets water climb up it. (a) True (b) False
18. 18.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
19. 19.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
20. 20.True or false: a piece of foil lets water climb up it. (a) False (b) True
21. 21.⚖️ 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
22. 22.🔮 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
23. 23.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a battery cell (d) a magnet
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a glass of water (d) a few hours of waiting
26. 26.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a flower stem (d) a plastic ruler
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) a mirror
28. 28.🌼 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
29. 29.💧 Which of these lets water climb up it? (a) a flower stem (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
30. 30.💧 Which of these lets water climb up it? (a) a paper towel (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
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 what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a glass of water (d) a magnet
33. 33.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) food colour (d) a balloon
35. 35.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a cotton thread (d) a sugar cube
36. 36.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
39. 39.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) a white flower

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