Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 301 · 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 is the odd one out? (a) a sugar cube (b) a flower stem (c) a rubber eraser (d) a strip of cloth
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) turmeric powder (d) a glass of water
4. 4.⚖️ 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) True (b) False
5. 5.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
6. 6.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a flower stem (d) a cotton thread
7. 7.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
9. 9.True or false: a piece of foil does not let water climb. (a) False (b) True
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
11. 11.True or false: a paper towel does not let water climb. (a) True (b) False
12. 12.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
13. 13.🔮 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 all turn green (d) they fall off at once
14. 14.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a glass marble (d) a plastic ruler
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
17. 17.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
18. 18.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of water
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a magnet (d) a battery cell
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) yeast
22. 22.⚖️ 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 measure it (b) we change it (c) we keep it the same
23. 23.⚖️ 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 the one thing we change. (a) False (b) True
24. 24.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a plastic ruler does not let water climb. (a) True (b) False
26. 26.True or false: a steel spoon lets water climb up it. (a) True (b) False
27. 27.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) a glass of water
29. 29.True or false: a cotton thread lets water climb up it. (a) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a cotton thread
31. 31.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.⚖️ 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
33. 33.⚖️ 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 change it (c) we keep it the same
34. 34.⚖️ 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 colour (b) the kind of flower (c) the amount of water (d) time for colour to show
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a battery cell
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) yeast (d) a few hours of waiting
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a mirror (d) a battery cell
38. 38.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
39. 39.True or false: a rubber eraser lets water climb up it. (a) True (b) False
40. 40.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up

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