Answer: convergent plate boundary
Explanation: when a plate capped by oceanic crust is subducted under a continental lithosphere an accretionary wedge and fore-arc basin forms an active continental margin between the trench and the continent .the magma that is created by ocean-continent convergence forms a magmatic arc the surface expression of a magmatic arc is either a line of andesitic island such as Aleutian island .
Answer:
Map projections
Explanation:
Its a systematic transformation of the latitude and longitudes from the surface of a sphere to the locations on plain. Map is created from drawing the projections. Depending upon the projections and the area to be shown some distortions may be allowed keeping the idea of Shape, direction, bearing , distance , scale and area.
Various classification have been emerged like :
Preserving direction (azimuthal or <u>zenithal</u>),
Preserving shape locally (conformal or <u>orthomorphic</u>).
Preserving area (equal-area or <u>equiareal </u>or equivalent or authalic).
Preserving distance (equidistant).
Preserving shortest route, a trait preserved only by the <u>gnomonic projection</u>
The area of ANY triangle is
Area = (1/2) (base x height) .
If the height is twice as long as the base, then
25 m² = (1/2) (base) x (2 x base)
25 m² = base²
<em>base = 5 m</em>
<em>height = 10 m</em>
Answer:
Subduction of Pacific plate under North American plate
Explanation:
There has been constant collision between the two plates, namely the Pacific plate and the Central American plate. As a result of which the <u>Pacific plate has got subducted</u> and <u>rate of subduction is very intense and fast</u> here because this lies in the region, commonly known as the "ring of fire".
Due to this subduction, the plates at great depth undergoes dehydration and partial melting occurs, that allows the magma to rise up to the surface forming volcanoes on the central America. There exist a huge number of volcanoes that includes cinder cone, composite as well as shield volcanoes.