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Q: Which characteristic of rocks tends to increase as the rocks are metamorphosed?
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Magma tends to rise toward Earth's surface principally because?

Magma tends to rise towards Earth's surface primarily because rocks become less dense when they melt. The hotter the magma, the more the rocks are likely to "float," if you will.


What occurs when water seeps into the cracks of rocks and then freezes?

Water expands when it freezes, therefore it tends to cause the rocks to crack (or perhaps I should say, it causes existing cracks to get larger, leading to the disintegration of the rock).


Which rocks is the most damaged by freezing sedimentary igneous or metamorphic?

Tends to be sedimentary rocks; a lot of sedimentary rock is weak and water can easily seep through cracks or be absorbed if permeable. The water contained freezes, expanding the cracks or pressure within the rock, breaking it.


What rocks do you need to make fire?

According to an IVillage expert, you should use volcanic rocks if available. Why? Because rocks from a stream or other water source tends to be wet and when they are lighted on fire they have been known to cause serious injury because they have been shown to explode. But not volcanic rock because it tends to be dry regardless of the conditions. Hope this helps.


Which are younger old seafloor rocks or old continental rocks?

Old sea floor rocks are much younger than old continental rocks! This is because the oceanic lithospheric plate forming the seafloor tends to be recycled at places known as subduction zones where it is forced below less dense (commonly continental) lithosphere. As such the oldest continental rocks tend to be 2-3 billion years old whereas oceanic crust neve tends to be more than a few hundred million years old.