10. Why do objects made of wood or plastic float in
water?
11. Why an iron needle sinks in water, but an iron
ship floats in water?
12. Describe comparison of densities in the three
states of matter.
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Answer:
10. wood or plastic has less density than water. therefore it floats over water.
11.iron has higher density than water,but in an iron ship there is more air resistance due to the ship's hollow shape and hrnce it floats.
12. solids having high densities
liquid having lower density than solid
gases having the least density.
Explanation:
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