Earth's Systems Crossword Puzzle

QUESTIONS LIST:

• seafloor spreading : a process in which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the underwater mountain/ridge.
• mountains : elevated or raised land cause by two or more tectonic plates colliding.
• continental drift : suggests that continents are in constant motion on the surface of the earth; theorized by alfred wegener.
• plate tectonic : the theory, or idea, of plate tectonics says that earth’s outer layer is made up of large, moving pieces called plates.
• convection : the circulation of materials caused by differences in temperature and density.
• geo sphere : the geosphere describes all of the rocks, minerals and ground that are found on and in earth. this includes all of the mountains on the surface, as well as all of the liquid rock in the mantle below us and the minerals and metals of the outer and inner cores.
• tectonic plates : pieces of earth’s lithosphere that move on the mantle.
• mid ocean ridges : mountain ranges in the middle of the ocean.
• ice age : a cold period marked by glaciers.
• pangaea : all of the earth’s continents as a super continent.
• fossils : naturally preserved remains , prints, or traces of organisms that lived long ago.