The Continents And Ocean Floor Make Up Earth S
Read more about asia.
The continents and ocean floor make up earth s. It is the youngest of all the major oceans on the earth. Our earth can be divided into three layers. Constructive forces cause physical features on earth s surface known as landforms to grow. What are the materials that make the earth crust of the continents and ocean floor 50 to 70 words 2 see answers nisha5434 nisha5434 from mud and clay to diamonds and coal earth s crust is composed of igneous metamorphic and sedimentary rocks.
The continents are made of a granite like rock. The continents are thicker and less dense than the materials that make up. It is a major sea route that connects africa the middle east and east asia with the americas and europe. Granite is made when hot liquid rock cools and hardens under the.
Why do continents float high relative to the ocean basin. Bathymetry the shape of the ocean floor is largely a result of a process called plate tectonics the outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig saw puzzle floating on top of the earth s hot flowing mantle. In fact we divide the crust in terms of. The most likely explanation they believe is that earth had no continents at the time because when these form the clays they contain absorb the ocean s heavy oxygen isotopes.
Also the continents and the ocean floor are not made of the same kind of rock. Comprising of 30 of the world s land area asia borders the pacific ocean in the east the arctic ocean in the north the indian ocean in the south and europe to the west. 9 10 this results in broadly evident stripes from which the past magnetic field polarity can be inferred from data gathered with a magnetometer towed on the sea surface or from an aircraft. Around 60 of the world s population lives in asia.
Plate tectonics and the ocean floor. The oldest continental rocks are billions of years old so the continents have had a lot of time for things to happen to them. The ocean basins extend from the edges of the continents down steep slopes to the ocean floor and into deep trenches. The most abundant rocks in the crust are igneous which are formed by the cooling of magma.
In the 1960s the past record of geomagnetic reversals of earth s magnetic field was noticed by observing magnetic stripe anomalies on the ocean floor. Continents and ocean floors are part of the crust. The outermost layer of earth is known as the crust. Asia is the world s largest continent both by population and by land area.