Sea Floor Spreading Worksheet Pdf

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Sea floor spreading worksheet pdf.

Sea floor spreading entire lesson pdf version. Seafloor spreading dichotomous key handwriting practice worksheets electromagnetic spectrum sea floor printable math worksheets earth and space science plate tectonics science classroom. 1 what feature of the ocean floor is shown at a. Seafloor spreading is happening at b.

This creates new ocean crust. It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. 3 what happens to old oceanic crust as new molten material rises from the mantle. 2 describe the process shown occurring at b and explain what results from this.

The older rock is close to 400 million years. This is a mid ocean ridge. Additionally if you would like all of the resources together in a pdf document that can be accessed as a complete resource here. Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean ridge.

In 1960 harry hess hypothesis about seafloor spreading was a key component of the plate tectonics revolution. Finally students may need their earth science reference tables esrt for parts of the lesson a document used widely in the new york state earth science regents. Sea floor spreading earth science post module 2 middle school page 3 the youngest rock will always be closest to the ridge area and the oldest will be on the outside closest to the continents. Sonar is a device that bounces sound waves off underwater objects and then records the echoes of these sound waves.

This coloring sheet visu. In the mid 1900s scientists mapped the mid ocean ridges using sonar. With one student representing a continent such as south america and another representing africa they can start out standing close together. The student s can also demonstrate seafloor spreading rate in the classroom.

Paleomagnetism led the revival of the continental drift hypothesis and its transformation into theories of sea floor spreading and plate tectonics. Sea floor spreading the longest chain of mountains in the world is the system of mid ocean ridges. 20 luxe sea floor spreading activity. Sea floor spreading worksheet use the figure above to answer the following questions.

Sea floor spreading worksheet pdf. The regions that hold the unique record of earth s magnetic field lie along the mid ocean ridges where the sea floor is spreading. 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. Sea floor spreading answer key.