Relationship between plate tectonics and landforms worksheet

Landforms Caused by Plate Tectonics | Sciencing

relationship between plate tectonics and landforms worksheet

This activity is part of the On the Cutting Edge Exemplary Teaching Activities in this relationship (i.e., phenomena often occur proximal to plate boundaries, but. What is the relationship between plate tectonics and landforms? Lesson/ Activity 2: The students will be learning about divergent plate boundaries such as . Why fold mountains and ocean trenches form at destructive plate margins. The difference between composite volcanoes which are associated with destructive.

Unimak Island, the large island nearest the AK peninsula, is separated from the peninsula by Bechevin Bay, shown at the bottom of the photograph. Shishaldin Volcano is the westernmost and tallest of the three featured volcanoes.

relationship between plate tectonics and landforms worksheet

Isanolski Volcano is the middle volcano ft or m. Why is this so?! See page 6 of your reference tables. Oceanic crust colliding with continental crust 24 We will be visiting the state of Washington in order to view plate tectonic features that resulted when the Juan de Fuca Plate oceanic crust collided with the North American Plate continental crust.

Plate Tectonics as Expressed in Geological Landforms and Events

Based on the map to the right, and in the next slide, what features should we be looking for? Helens just to the top of the center of the imageand Mount Adams near the left center of the image in the Cascade Range of central and southern Washington, can be seen in this south-southwest-looking view. The Cascade Range was formed from colliding tectonic plates N.

America and Juan De Fuca and volcanic activity, and these forces continue to make the Cascades rise. Mount Rainier at ft m is the highest point in the range. Forests cover an extensive area of the Cascade Range.

relationship between plate tectonics and landforms worksheet

The city of Portland, OR barely discernible and the Willamette River Valley are visible near the top left and top center of the image. Rainier, the tallest mountain in the Cascade Range at 14, ft mcan be seen in this low-oblique, west-southwest-looking photograph. Mount Rainier, a stratovolcano that has been dormant sincehas 26 active glaciers.

Scattered rectangular patterns are caused by the clearcutting practices of the timber companies in the region.

relationship between plate tectonics and landforms worksheet

Helens volcano with its developing lava dome and expansive pumice plain. The grayish-colored area of the blast zone from the eruption extends outward to the northwest, north, and northeast of the volcano.

North of the volcano lie three major lakes from east to west—Spirit Lake the largestthe elongated Coldwater Lake, and Castle Lake. Helens are clear-cut patterns lumbering interspersed throughout the darker green forested region of the Gifford Pinchot National Forest.

Plate Tectonics as Expressed in Geological Landforms and Events

Mount Saint Helens erupted on May 18,at 8: A series of moderate-to-severe earthquakes preceded the eruption, sending the north side of the mountain cascading down towards Spirit Lake. The avalanche, the largest ever observed in the Western Hemisphere, weakened the magma chambers within the volcano, causing a northward lateral and vertical explosion that destroyed over square miles square kilometers of forest in 5 seconds, and sent a billowing cloud of ash and smoke 70, feet 21, m into the atmosphere.

Visible on this photograph and situated between the caldera of the volcano and Spirit Lake is a large, grayish, pumice plain. This plain is made up of volcanic mud, ash, and debris that burned the original Toutle River Valley to a depth of feet m.

The avalanche of debris and ash raised the level of Spirit Lake feet 61 m over its pre-eruption level, blocked the flow of Coldwater Creek, and formed the now elongated foot deep 91 m deep Coldwater Lake. This lake is located approximately 7 miles 11 km from the volcano. Though not clearly visible on this photograph, vegetation has returned and is flourishing in most areas of the blast zone, with the exception of the pumice plain area. What plates are involved in this collision between oceanic and continental crust?

Plate Tectonics, Earthquakes, and Landforms by kathrin smith on Prezi

South America 31 Chile Southern Andes Mountains, Central Valley, Chile, Many volcanic peaks, snowcapped ridges, and glacial lakes of the southern Andes are visible in this southeast-looking view. Between the mountains and the Pacific Ocean lower rightthe long, narrow, fertile Central valley of Chile appear distinctly greener—on the wet side of the mountains—compared with the dry plains of Patagonia top left.

The Central Valley stretches southward to where it drops below sea level into the Gulf of Ancud upper right. The glacial lakes of the forested slopes of the Andes begin with Lakes Colico, Caburga, and Villarrica bottom left portion of the image. Between Lakes Villarrica and Calafquen is the snow-covered stratovolcano Villarrica which is presently active.

relationship between plate tectonics and landforms worksheet

Ocean Trenches Ocean trenches form at two kinds of convergent plate boundaries: In both cases, the subduction forms an undersea trench. These trenches are long, narrow valleys and include the deepest areas of the ocean.

Plate Tectonics

The deepest ocean trench is the Marianas Trench, reaching a depth of almost 36, feet below sea level. Sciencing Video Vault Island Arcs The subduction process that occurs when an oceanic plate converges with another oceanic plate can lead to volcanoes being formed paralleling the trench. The volcanic debris and lava build up on the ocean floor over millions of years and eventually results in a formerly submarine volcano rising above sea level to create an island.

A curved chain of these volcanoes, known as an island arc, usually occurs in these cases.

The Relationships Between Plate Boundaries and Tectonic Landforms

The magma that forms these arcs derives from partial melting around the descending plate or the overlying oceanic lithosphere. Ocean Ridges At divergent boundaries, plates move away from each other, creating a new crust as magma is pushed up from the mantle. Mid-ocean ridges result from volcanic swelling and eruptions along the divergent boundary.