Unit 4 Lessons 4 - 7. Vocabulary. a gradual increase in average global temperatures. global warming. the size and shape of the land features of a region, including relief. topography. the distance north or south of the Equator; expressed in degrees. latitude.
the warming of the surface and lower atmosphere of Earth that occurs when water vapor, carbon dioxide, and other gases absorb and reradiate solar energy
a severe storm that develops over tropical oceans and whose strong winds of more that 119 km/h spiral in toward the intensely low-pressure center