Sea Floor Spreading Classroom Activity

The quiz mimics how standardized tests generally ask about this topic as questions require si.

Sea floor spreading classroom activity.

Sea floor spreading answer key. This is an ngss based 10 question quiz about continental drift and sea floor spreading. It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. Convection currents carry heat from the lower mantle and core to the lithosphere.

Effective ngss ms ess2 1 and ms ess2 2 quiz. Seafloor spreading is happening at b. 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. Seafloor spreading is the process that occurs at mid ocean ridges where new crust is formed through volcanic activity and then gradually moves away from the ridge.

In 1960 harry hess hypothesis about seafloor spreading was a key component of the plate tectonics revolution. In this activity students will use actual data from historic oceanographic cruises to examine sea floor spreading. They will also model sea floor spreading at a spreading center such as the mid atlantic ridge. 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.

Most basalt magmas contain abundant molten iron. Seafloor spreading and other tectonic activity processes are the result of mantle convection. A worksheet will then test for understanding and introduce global earthquake distribution as an indicator of plate movements. As magma starts to harden into rock iron rich minerals solidify first.

Students will observe seafloor spreading in the classroom through a paper towel spreading center demonstration illustrating the relative motion of the plates. This coloring sheet visu. Their crystals are pulled into alignment by the earth s magnetic field just like a compass needle is pulled towards magnetic north. Modeling sea floor spreading.

When a divergent boundary occurs in the ocean seafloor spreading is the result. Once the basalt cools completely into solid rock the. Mantle convection is the slow churning motion of earth s mantle. Convection currents also recycle lithospheric materials back to the mantle.

This creates new ocean crust. This is a mid ocean ridge. Learn more about sea floor spreading and how it works with this demo. At the completion of this activity you should be able to.

Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean ridge. Plot data on a. Displaying top 8 worksheets found for activity seafloor spreading.