please answer question 3 and 4 correct answer will get thanks and brainliest
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please answer question 3 and 4 correct answer will get thanks and brainliest
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Q 3 : Answer
The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly composed of basalt.
Teachers resources: Earth Science Ireland - Planet Earth
Related publications: Understanding Earth Processes, Rocks and the Geological Hi...
Q 4 answer :
The crust is the outer layer of the Earth. It is the solid rock layer upon which we live. ... Continental crust is typically 30-50 km thick, whilst oceanic crust is only 5-10 km thick. Oceanic crust is denser, can be subducted and is constantly being destroyed and replaced at plate boundaries.