Earth Science Exam Review Correct Questions And Answers!

surface wave {Ans: a type of seismic wave that forms when P waves and S waves reach Earth's surface}heliocentric {Ans: A model of the solar system in which Earth and the other planets revolve around the sun.}mid-ocean ridge {Ans: An underwater moutain chain where new ocean floor is formed}spectrograph {Ans: An instrument that separates light into colors and makes an image of the resulting spectrum.}divergent plate boundary {Ans: a boundary where plates are spreading apart}El Nino {Ans: An abnormal climate event that occurs every two to seven years in the Pacific Ocean; causing changes in winds; currents; and weather patterns for one to two years.}