The main reason why the tectonic plates move is the conversational currents. There is magma between the upper mantle and the asthenosphere that heats up at the upper mantle. The weight is so small that the magma rises with the help of these conversational currents. When the magma has ascended towards the asthenosphere, it has nowhere to go so the magma lies along the asthenosphere. There the magma cools down again because the asthenosphere is colder than the upper mantle, which makes the magma heavier and goes back down to the upper mantle, where the magma heats up again and everything starts all over again and so it goes on over and over again. Scientists have concluded that the earth's gravity causes two other processes that also cause the tectonic plates to move.
Ridge push - in the spreading zones, the sides of the tiles are raised and slide to the side as in a slide.
Slab pull - when a plate is pulled down by gravity in a subduction zone like an anchor.
Answer: A. It is just a name change, magma is melted rock inside of the earth in lava is what magma is called if it reaches the surface of earth
Explanation:
Magma is referred to as a hot, molten rock that is under the surface of the Earth When the magma then reaches the surface of the Earth, it is referred to as lava.
Therefore, the correct option is A "It is just a name change, magma is melted rock inside of the earth in lava is what magma is called if it reaches the surface of earth".
The headquarters for the United Nations is located in C.New York City NY in the United States. New York has lots of business and trading buildings, so the UN headquarters fits right in.
Answer:
The Andes were formed by tectonic activity whereby Earth is uplifted as one plate (oceanic crust) subducts under another plate (continental crust). To get such a high mountain chain in a subduction zone setting is unusual, which adds to the importance of trying to figure out when and how it happened.
Explanation:
Answer:
Following are this difference to this question:
Explanation:
It is an interconnected tectonic plate for creating an island arc, in which sea plate sinks into the sea and some other, throughout the continental as well as oceanographic croutons a tourist hotspot volcanic eruption forms, in which lava explodes from its coat.
These volcanos are often far from boundaries with plate lands, and All the types are restrained, however, the volcanic arches connect with the sea, whereas the island arches come into contact with the ocean.
