Astronomy a star’s light is shifted to the blue part of the light spectrum. what does this mean about the length of light waves and movement of the star? explain your answer. a. the wavelengths are getting longer, meaning the star is moving away from the observer. b. the wavelengths are getting longer, meaning the star is moving toward the observer. c. the wavelengths are getting shorter, meaning the star is moving toward the observer. d. the wavelengths are getting shorter, meaning the star is moving away from the observer.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary