Sea Floor Spreading Model Activity

Once the basalt cools completely into solid rock the.

Sea floor spreading model activity.

Displaying top 8 worksheets found for activity seafloor spreading. As magma starts to harden into rock iron rich minerals solidify first. 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.

Mantle convection is the slow churning motion of earth s mantle. 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. The purpose of this activity is to make a simple model that shows the evolution of oceanic crust through sea floor spreading. 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 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. 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. Their crystals are pulled into alignment by the earth s magnetic field just like a compass needle is pulled towards magnetic north. 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.

This interactive activity is simple to prepare and to execute and allows the students to understand seafloor spreading and the position of newer rock and older rock in relation to. Most basalt magmas contain abundant molten iron. Convection currents also recycle lithospheric materials back to the mantle. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.

When a divergent boundary occurs in the ocean seafloor spreading is the result. 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.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Seafloor spreading is the movement of magma through a crack in a mid oceanic ridge.