Sea Floor Spreading Quizlet

Magma from the asthenosphere fills cracks in the ocean crust along mid ocean ridges.

Sea floor spreading quizlet. The process of sea floor spreading. A 3 inches b 30 meters c 30 inches d 3 cm e 30 cm. Click card to see definition in sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added. Along the edges of all the continents.

Click again to see term 1 21. As a result the ocean floors move like conveyor belts carrying the continents along with them. Magma is pushed up though cracks in the crust along the mid ocean ridge as the magma is thrust up and hardens it forms new crust and the ocean floor on both sides and hardens it forms new crust and the ocean floor on both sides of the mid ocean ridge. This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century.

Sea floor spreading occurs when the sea floor spreads apart along divergent boundries and forms the mid ocean ridge. Ocean floor eventually settles back into the mantle at the subduction zone. What is the process of sea floor spreading. In sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.

The questions in this online quiz will test you on some facts about sea floor spreading. As the ocean seafloor spreads the newly formed floor will adapt a specific magnetic signature according to the earth s magnetic pole at that time. In sea floor spreading molten material rises from the mantle and erupts. As years pass lateral segments of seafloor will thus share the same.

Some points you ll be tested on include tectonic plates and how sea floor spreading occurs. As a result the ocean floors move like conveyor belts carrying the continents along with them. Start studying sea floor spreading. At the north and south poles.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Magma cools to form new ocean floor. The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed. The mid ocean ridge is the region where new oceanic crust is created.

The rate of seafloor spreading is approximately every 10 years. The sequence of sea floor spreading is 1.