Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 588 · 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.⚖️ 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) True (b) False
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a mirror (d) a few hours of waiting
4. 4.🧺 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
5. 5.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
6. 6.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a flower stem (d) a plastic ruler
7. 7.🔮 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 stay white (c) they fall off at once (d) they all turn green
8. 8.⚖️ 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) False (b) True
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a white flower (d) food colour
10. 10.🔍 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 water turns green (d) the petals turn bluish
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a white flower (d) a balloon
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
14. 14.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
15. 15.True or false: a sugar cube lets water climb up it. (a) False (b) True
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
17. 17.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a strip of cloth (d) a plastic ruler
18. 18.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
20. 20.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a sugar cube (d) a cotton thread
21. 21.💧 Which of these does not let water climb? (a) a piece of chalk (b) a glass marble (c) a sugar cube (d) a cotton thread
22. 22.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
24. 24.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a paper towel (d) a piece of chalk
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a glass of water (d) a few hours of waiting
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
27. 27.⚖️ 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
28. 28.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
29. 29.True or false: a piece of foil lets water climb up it. (a) False (b) True
30. 30.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a steel spoon (d) a strip of cloth
31. 31.⚖️ 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
32. 32.⚖️ 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 measure it (b) we change 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? True or false: the length of the stem is kept the same. (a) True (b) False
34. 34.🌼 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
35. 35.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a piece of foil (d) a sugar cube
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
37. 37.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a steel spoon (d) a plastic ruler
39. 39.⚖️ 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 amount of water (c) the kind of flower (d) time for colour to show
40. 40.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed

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