Physics 0.0 / 5 ? PhysicsEarth in spaceGCSEOCR Created by: marshmallowCreated on: 10-12-13 15:46 what are the large pieces of rock that the Eath's crust is cracked into? tectonic plates 1 of 10 how old is our sun? 5000 million years 2 of 10 tectonic plates are ___ dense than the mantle. less 3 of 10 other than brightness, how else can astronomers work out the distance to stars? parallax 4 of 10 what kind of pollution makes it hard to see the stars at night? light 5 of 10 what is the a harmful type of electromagnetic radiation given out by stars? ultraviolet 6 of 10 what is the theory that the universe started with an explosion? big bang 7 of 10 what is an example of a longituninal wave? sound wave 8 of 10 what is an example of a transverse wave? water wave 9 of 10 what is the unit of frequency of a wave? hertz 10 of 10
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