Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 457 · 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 flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a battery cell (d) a balloon
3. 3.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
4. 4.True or false: a sugar cube does not let water climb. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a flower stem (d) a steel spoon
6. 6.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🔍 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
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) yeast (d) a balloon
10. 10.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a paper towel (d) a piece of chalk
12. 12.🔮 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 turn two colours (c) they fall off at once (d) they all turn green
13. 13.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
16. 16.True or false: a flower stem lets water climb up it. (a) False (b) True
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
18. 18.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a few hours of waiting
20. 20.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
21. 21.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the room it stands in
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
23. 23.🌼 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
24. 24.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
25. 25.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) turmeric powder (d) food colour
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a few hours of waiting (d) a glass of water
29. 29.⚖️ 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 room it stands in (c) the length of the stem
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a glass of water (d) a few hours of waiting
32. 32.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a cotton thread (d) a paper towel
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a few hours of waiting (d) a mirror
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
40. 40.True or false: a glass marble lets water climb up it. (a) False (b) True

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