TEKS: Chapter 112. Science See All Teacher Resources

112.36.c.6

Earth in space and time. The student knows the evidence for how Earth's atmospheres, hydrosphere, and geosphere formed and changed through time. The student is expected to:

• (A)  analyze the changes of Earth's atmosphere that could have occurred through time from the original hydrogen-helium atmosphere, the carbon dioxide-water vapor-methane atmosphere, and the current nitrogen-oxygen atmosphere;

• (B)  evaluate the role of volcanic outgassing and impact of water-bearing comets in developing Earth's atmosphere and hydrosphere;

• (C)  investigate how the formation of atmospheric oxygen and the ozone layer impacted the formation of the geosphere and biosphere; and

• (D)  evaluate the evidence that Earth's cooling led to tectonic activity, resulting in continents and ocean basins.