Sea Floor Spreading Model Activity

Sea floor spreading happens at places where plates are moving away from each other and where the liquid rock from the asthenosphere can come up to the lithosphere.

Sea floor spreading model activity.

The purpose of this activity is to make a simple model that shows the evolution of oceanic crust through sea floor spreading. Displaying top 8 worksheets found for activity seafloor spreading. As magma starts to harden into rock iron rich minerals solidify first. 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.

Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. Seafloor spreading and other tectonic activity processes are the result of mantle convection. In the places where the plates are moving apart magma liquid rock moves up into the cracks and solidifies making a new ocean floor just like cake batter would ooze up through. Convection currents carry heat from the lower mantle and core to the lithosphere.

Some of the worksheets for this concept are sea floor spreading work sea floor spreading a model of seafloor spreading inside earth work magnetic reversals activity name date sea floor spreading l 1 2 3 5 4 ovr l lesson 3 seafloor profiling seafloor spreading and subduction. The creation of new sea floor at mid ocean spreading centers and its destruction in subduction zones is one of the many cycles that causes the earth to experience constant change. Model of seafloor spreading templates one with three straight lines and another with striped bands or striped bands with arrows colored pencils or crayons. The purpose of this activity is to make a simple model that shows the evolution of oceanic crust through sea floor spreading and subduction.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Seafloor spreading earth science indicator 9 describe the interior and structure of earth and earth s crust as divided into tectonic plates riding on top of slow moving currents of magma in the mantle earth science indicator 11 use models to analyze the size and shape of earth its surface and its interior e g globes. Convection currents also recycle lithospheric materials back to the mantle. Mantle convection is the slow churning motion of earth s mantle.

Once the basalt cools completely into solid rock the. Seafloor spreading is the movement of magma through a crack in a mid oceanic ridge. Most basalt magmas contain abundant molten iron. When a divergent boundary occurs in the ocean seafloor spreading is the result.

The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate. A model of seafloor spreading purpose.