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What happen at sliding boundaries?
Known as Tectonic plates, the earths crust is made up of several which are all constantly moving. When the pressure between two adjacent plates becomes too great, one slips beneath the other causing an earthquake on land, with obvious repercussions, or a tsunami in the ocean after an underwater quake.
Why are the mountains located at the west?
Assuming you mean the mountains of the western United States, there are two sources of their formation. The Rockies were formed when the Farallon Plate, a tectonic plate that once lay beneath the Pacific Ocean, collided with and slid under the North American Plate. As this happened it compressed the crust and dragged against the bottom,pushing mountains up. After the Farallon PLate was gone, the continent started to pull apart enough that bloacks of crust sand downward, leaving mountain ranges as high areas to form the basin and range province. The thinning of the crust also resulted in some volcanic activity.
Compare and contrast three different kinds of colliding boundaries?
1. between the continential crust and the oceanic crust 2. between two continential crusts (forms a mountain) 3. between two oceanic crusts (forms mid-ocean ridges)
What two parts make up the lithosphere?
Earth's crust and the very top of the mantle form the lithosphere
What are the earths two principal motions?
Rotation- the spinning of earth about its axis Revolution- movement of earth in its orbit around the sun :)
Which two layers of the earth are liquid?
The two layers of earth that are made up of liquids are the crust and the outer core. The crust is the surface of the earth which is where the oceans are. The outer core is made up of iron and is the creator of the earths magnetic field.
How has the study of earthquakes helped us understand the inner layer of the earth?
Earthquakes are caused by a shift in two different plates beneath the earths surface. The shift is usually caused by convectional magma flows underneath the earths crust. This is because the plates are purely floating slabs of rock on the magma beneath it. The layer beneath the crust is called the mantle.
What are the two layers of the continental crust called?
The 2 layers of the continental crust are oceanic crust and the land crust
What are the two layers of the earth?
Crust, Mantle, Core. The Crust is about 10 miles thick.
What two things deep beneath the earth's surface can change any rock into a metamorphic rock?
heat and pressure in the earths crust with little if any chemical change.
Does the crust have two different chemical layers?
It is not
What are the two images of the earths layers?
solid and liquid
What 2 types of rock are most common beneath the earths crust?
Metamorphic and igneous rocks are the two most common under the surface of earth.
What 2 layers make up the Earth's crust?
the earths crust and the rigid upper mantle
What are two rocks that can be found in the earths crust?
Basalt and limestone.
Which two earth layers are made of rock?
crust and mantle
Which two layers of the earth are made of rock?
crust and mantle
