Sea Floor Spreading Model Activity

Spreading rates determine if the ridge is fast intermediate or slow.

Sea floor spreading model activity.

Seafloor spreading is the movement of magma through a crack in a mid oceanic ridge. 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. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. A model of seafloor spreading purpose.

Convection currents also recycle lithospheric materials back to the 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. 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. Mantle convection is the slow churning motion of earth s mantle.

Most basalt magmas contain abundant molten iron. The purpose of this activity is to make a simple model that shows the evolution of oceanic crust through sea floor spreading and subduction. As magma starts to harden into rock iron rich minerals solidify first. Once the basalt cools completely into solid rock the.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Displaying top 8 worksheets found for activity seafloor spreading. 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. Seafloor spreading and other tectonic activity processes are the result of mantle convection.

Their crystals are pulled into alignment by the earth s magnetic field just like a compass needle is pulled towards magnetic north. 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. 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. 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. 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.