Sea Floor Spreading Worksheet Pdf

1 what feature of the ocean floor is shown at a.

Sea floor spreading worksheet pdf.

In the mid 1900s scientists mapped the mid ocean ridges using sonar. Seafloor spreading dichotomous key handwriting practice worksheets electromagnetic spectrum sea floor printable math worksheets earth and space science plate tectonics science classroom. Work together for the rest of the worksheet. The student s can also demonstrate seafloor spreading rate in the classroom.

Sea floor spreading the longest chain of mountains in the world is the system of mid ocean ridges. The older rock is close to 400 million years. Paleomagnetism led the revival of the continental drift hypothesis and its transformation into theories of sea floor spreading and plate tectonics. Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean ridge.

Sea floor spreading worksheet use the figure above to answer the following questions. This is a mid ocean ridge. It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. 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.

3 what happens to old oceanic crust as new molten material rises from the mantle. 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. This creates new ocean crust. Sea floor spreading worksheet pdf.

Additionally if you would like all of the resources together in a pdf document that can be accessed as a complete resource here. Sea floor spreading entire lesson pdf version. The regions that hold the unique record of earth s magnetic field lie along the mid ocean ridges where the sea floor is spreading. 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.

With one student representing a continent such as south america and another representing africa they can start out standing close together. 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. 2 describe the process shown occurring at b and explain what results from this. 20 luxe sea floor spreading activity.

Strong evidence of seafloor spreading and plate tectonics. Sonar is a device that bounces sound waves off underwater objects and then records the echoes of these sound waves. Sea floor spreading answer key. In 1960 harry hess hypothesis about seafloor spreading was a key component of the plate tectonics revolution.