Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 86 · 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 lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a white flower (d) turmeric powder
3. 3.🧺 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 glass of water (d) a balloon
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) False (b) True
5. 5.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.⚖️ 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
7. 7.🔍 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a glass of water
9. 9.True or false: a sugar cube lets water climb up it. (a) True (b) False
10. 10.🔮 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
11. 11.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
12. 12.True or false: a flower stem does not let water climb. (a) True (b) False
13. 13.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) food colour (d) a white flower
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a flower stem (d) a glass marble
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
18. 18.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.⚖️ 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) time for colour to show (c) the length of the stem (d) the amount of water
20. 20.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a flower stem
22. 22.True or false: a cotton thread does not let water climb. (a) True (b) False
23. 23.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a steel spoon (d) a sugar cube
25. 25.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
26. 26.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a magnet (d) a mirror
28. 28.True or false: a flower stem lets water climb up it. (a) True (b) False
29. 29.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
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 the one thing we change. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a paper towel
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
33. 33.🔮 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
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) turmeric powder (d) a glass of water
37. 37.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a strip of cloth (d) a plastic ruler
40. 40.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a glass marble (d) a sugar cube

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