What is Planet EArth 5

What is Planet EArth 5 - These areas are where the sea...

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Earth’s solid parts Here is the upper 50 kilometers of the Earth’s surface. It is divided into two major parts: the crust and the mantle. The crust is the uppermost part; the crust has two types: continental & oceanic. Oceanic crust exists under the ocean’s waters. Continental crust is dry land. Beneath the crust is the mantle. The mantle is divided into the upper and lower mantle. The upper part of the upper mantle is called lithospheric mantle; the lower part of the upper mantle is called the asthenosphere. The uppermost part of the upper mantle plus the crust (oceanic and continental) is called the lithosphere. The lithosphere is the surface of the Earth that cracks and moves during Earthquakes. Also, plate tectonics is when the lithosphere moves. Earth’s lithosphere The thinnest parts of the Earth lithosphere is the red areas.
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Unformatted text preview: These areas are where the sea floor is spreading and magma is rising to the surface to cool and form new crust. Continental areas are relatively thicker. Continents get thick due to a process called accretion, which is when continents collide and pack together to form thicker landmasses. Mountain building helps also to thicken continental areas. Most interiors of continents are billions of years old. For example the interior of North America called the Canadian shield is one of the oldest patches of land known on Earth. The shields are the blues, indigos and violets, which are the thickness pats of the lithosphere. We measure our plant with these parameters: How do we measure our planet? Latitude Longitude Prime Meridian Equator Hemispheres Tropics Temperate Polar...
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What is Planet EArth 5 - These areas are where the sea...

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