A lot of people might not know that the earth is not round. In fact it is a spheroid. Isaac Newton was the first to propose that the earth isn’t round. Newton's research showed that inside the earth there are multiple layers. Later scientists discovered that the very first layer, the crust, is made out of plate tectonics. All the different phenomena that we see on Earth, such as earthquakes, volcanoes, and landforms, are caused by the plate tectonics.
In order to understand the layers of the earth one has to understand how the earth was formed. Earth started out as planetesimals, small bodies from which a planet originated in early stages of formation of the solar system, colliding together and the force of gravity creating protoplanets. The …show more content…
The first layer is the crust. It's the brittle outermost layer, and it varies in thickness from 25 to 60 km under continents. The oceanic crust is about 4 to 6 km. The continental crust is quite complex in structure and is made from many different kinds of rocks, much more complex than the oceanic crust. This stucture also known as plate tectonics. Below the crust lies the sense mantle, which is a depth of 2890 km. The mantle consists of dense silicate rocks. It behaves as a fluid, but the P- and S- waves from the earthquakes travel through the mantel, demonstrating that it is a solid. Next, the core, composed of iron and nickel, exists because it refracts seismic waves creating a “shadow zone” as distance of 103 degrees and 143 degrees. The earth has a circumference of about 6,371 kilometers at the poles and about 6,393 at the equator. It is about 4.5 billion years old. First, the earth started off with rocky nothingness; now it has changed to landforms and life. Plate tectonics help shaped the earth into what we have today.
Earth’s surface has changed so much over 4.5 billion years. The main reasons to the change is, plate tectonics, earthquakes, and volcanoes. Plate tectonics caused the continental drifts, the first person to have the theory of continental drift was a German geologist and meteorologist named Alfred Wegener. In 1960s came the full explanation began to develop of Alfred’s theory. He had say …show more content…
There are over 16 different types of landforms in the ocean. For example, calderas, they are a collapse feature typically found on the summits of large volcanoes. It normally if formed when magma is suddenly removed from deep within a volcano due to a large eruption or intrusion. There isn't much different between ocean forms and landforms. The only major difference is the vents, and how they work. On land we have geysers and hot springs. Underwater they are called diffuse vents and focused vents. On land it just lets out hot air and water. Underwater it's all about mixtures of hot and cold water, also on what comes out. For example the snow blover, it's a vent that lets ot white flocculent
In order to understand the layers of the earth one has to understand how the earth was formed. Earth started out as planetesimals, small bodies from which a planet originated in early stages of formation of the solar system, colliding together and the force of gravity creating protoplanets. The …show more content…
The first layer is the crust. It's the brittle outermost layer, and it varies in thickness from 25 to 60 km under continents. The oceanic crust is about 4 to 6 km. The continental crust is quite complex in structure and is made from many different kinds of rocks, much more complex than the oceanic crust. This stucture also known as plate tectonics. Below the crust lies the sense mantle, which is a depth of 2890 km. The mantle consists of dense silicate rocks. It behaves as a fluid, but the P- and S- waves from the earthquakes travel through the mantel, demonstrating that it is a solid. Next, the core, composed of iron and nickel, exists because it refracts seismic waves creating a “shadow zone” as distance of 103 degrees and 143 degrees. The earth has a circumference of about 6,371 kilometers at the poles and about 6,393 at the equator. It is about 4.5 billion years old. First, the earth started off with rocky nothingness; now it has changed to landforms and life. Plate tectonics help shaped the earth into what we have today.
Earth’s surface has changed so much over 4.5 billion years. The main reasons to the change is, plate tectonics, earthquakes, and volcanoes. Plate tectonics caused the continental drifts, the first person to have the theory of continental drift was a German geologist and meteorologist named Alfred Wegener. In 1960s came the full explanation began to develop of Alfred’s theory. He had say …show more content…
There are over 16 different types of landforms in the ocean. For example, calderas, they are a collapse feature typically found on the summits of large volcanoes. It normally if formed when magma is suddenly removed from deep within a volcano due to a large eruption or intrusion. There isn't much different between ocean forms and landforms. The only major difference is the vents, and how they work. On land we have geysers and hot springs. Underwater they are called diffuse vents and focused vents. On land it just lets out hot air and water. Underwater it's all about mixtures of hot and cold water, also on what comes out. For example the snow blover, it's a vent that lets ot white flocculent