from Wiktionary, Creative Commons Attribution/Share-Alike License. 1  adj. Undisciplined, unruly; not able to be controlled. 2  adj. Lewd, immoral; sexually open, unchaste. 3  adj. Playful, sportive; being merry or carefree (often used figuratively). 4  adj. Self-indulgent, fond of excess; luxurious. 5  adj.
From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth's surface in the present and the past. Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.The plates act like a hard and rigid shell compared to Earth's mantle.This strong outer layer is called the lithosphere.Developed from the 1950s through the 1970s, plate tectonics is the modern version of continental drift, a theory first proposed by scientist Alfred Wegener in 1912.he plates act like a hard and rigid shell compared to Earth's mantle. This strong outer layer is called the lithosphere. Developed from the 1950s through the 1970s, plate tectonics is the modern version of continental drift, a theory first proposed by scientist Alfred Wegener in 1912.
Crustal plates (tectonic plates) are the outer shell of the Earth. Continental crust and oceanic crust are the two main types of plates.Large plates like the North American Plate is considered a continental plate but also contains oceanic crust. Continental crust which contains the interior of the large continents is much older than oceanic plates.rustal plates (tectonic plates) are the outer shell of the Earth. Continental crust and oceanic crust are the two main types of plates.