East Asia in the Pacific Ocean.
Answer:
C. <u>A circle of circumference whose centre coincides with the centre of earth</u>.
Explanation:
- Geodetics is the science that tells about the center of spherical circles whose center coincides with that of a complete sphere.
- The great circle also known as the Orthodrome is a sphere whose center passes through the central points of a sphere thus all great circles have the same center and circumference as each other.
- In pair of antipodal points which is infinitely form many great circles. The prime meridian 0 degree is an example of this greater circle. They are common for navigation and aviation.
- Having an equatorial radius of 6378.137 km of dividing the earth into two equal parts of north and south zones.
Answer:
Subduction zone and trench is formed
Explanation:
When two tectonic plates that are comprised of oceanic crust shares a convergent type of plate boundary, then the denser one subducts below the less dense one. Due to this convergent plate motion, a subduction zone is created, which is marked by the presence of an oceanic trench. As the subducting plate penetrates downward into the deeper zone, the process of partial melting takes place, which leads to the melting of the crust and eventually the constituent minerals are mixed with the magma. This magma again comes upward due to the force exerted by the convection current and thereby results in the formation of volcanoes in the over-riding plate.
Thus, the collision of two oceanic plates gives rise to the formation of a subduction zone and a trench.
