Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 827 · 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.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
2. 2.True or false: a piece of foil does not let water climb. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a piece of chalk (d) a sugar cube
4. 4.⚖️ 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) time for colour to show (b) the room it stands in (c) the kind of flower (d) the length of the stem
5. 5.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
7. 7.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a glass marble (d) a sugar cube
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🔍 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
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) food colour (d) a few hours of waiting
12. 12.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a white flower (d) a few hours of waiting
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.True or false: a cotton thread does not let water climb. (a) True (b) False
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
20. 20.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
21. 21.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a steel spoon (d) a glass marble
22. 22.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) a mirror
24. 24.⚖️ 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 water (b) time for colour to show (c) the length of the stem (d) the room it stands in
25. 25.⚖️ 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) True (b) False
26. 26.⚖️ 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) False (b) True
27. 27.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a battery cell (d) a balloon
29. 29.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a battery cell
33. 33.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
34. 34.True or false: a plastic ruler lets water climb up it. (a) False (b) True
35. 35.⚖️ 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
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 keep it the same (c) we measure it
37. 37.⚖️ 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
38. 38.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a glass marble (d) a rubber eraser
39. 39.🧺 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) a white flower (d) a battery cell
40. 40.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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