[ 75 ] Earth and Space Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ____________ is heat energy produced in the rock and fluids beneath Earth’s crust. It can be found from shallow ground to several miles below the surface, and even farther down to the extremely hot molten rock called magma. Deep wells are drilled into underground reservoirs to tap steam and very hot water to drive turbines linked to electric generators. Summarize the concept of the Big Bang Theory in terms of how it relates to the structure of the universe. What are millions of stars bound near each other by gravity called?
