The Ocean Floor And Plate Tectonics Worksheet

Some of the worksheets below are tectonic plates worksheets predicting tectonic activity definition of plate composition plate movement types of plate boundary continent continent collision hands on activities with colorful diagrams along with questions and answers at the end of each page.

The ocean floor and plate tectonics worksheet. The growing plates inch away from the ridges widening ocean basins and rafting apart entire continents. Print ocean drilling as evidence for plate tectonics worksheet 1. Seafloor spreading is happening at b. As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading.

These age data also allow the rate of seafloor spreading to be. Plate tectonics describes the distribution and motion of the plates. You will recall from a previous chapter that there are three. The theory of plate tectonics grew out of earlier hypotheses and observations collected during exploration of the rocks of the ocean floor.

The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. Trench systems occur for both continent ocean and ocean ocean boundaries the worlds deepest parts of the ocean are found along trenches. This is a mid ocean ridge. Plates are composed of lithosphere about 100 km thick that float on the ductile asthenosphere.

Bathymetry the shape of the ocean floor is largely a result of a process called plate tectonics the outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig saw puzzle floating on top of the earth s hot flowing mantle. What was the name of the project started in the 1960s that was designed to extract and analyze samples from the ocean floor. The mariana trench is 11 km deep. Two pieces of evidence for plate tectonics.

It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. What are the layers of the earth. 2 introduction earth s lithosphere is divided into mobile plates. Plate tectonics plate tectonics seafloor spreading.

Plate tectonics and the ocean floor. Plates come together. Plate tectonics is the theory that explains how large pieces of the earth s outermost layer called tectonic plates move and change shape. This creates new ocean crust.

Spreading ridges and cools on and beneath the ocean floor adding to the plates on either side. Convergent boundary where plates come together or converge we see some dramatic manifestations of plate tectonics. Sea floor spreading answer key. Samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre important evidence in favour of this process.