Plate tectonics

Plate tectonics are composed of many layers from inner to out. They are able to move because of Earths lithosphere.

Northrigde Earthquake

The Northridge Earthquake occured on January 17,1994. There was many aftershocks after the main earthquake. It triggered many landslides to close by mountains.

Earthquake hazards in California

California earthquakes are developed by movement of huge blocks of the earth’s crust; the Pacific Plate and the North American Plate. The Pacific Plate is moving northwest, scraping horizontally past the North American Plate at a rate of about 2 inches per year.

Batholith

A batholith is a large emplacement of igneous intrusive rock that forms from cooled magma deep in the earth's crust.A large mass of igneous rock that has melted and intruded surrounding strata at great depths.

Strats vs. Sheild Volcanoe

the shield volcanoare large volcanoes that are built almost entirely of fluid lava flows

the strata volcano is a tall, conical volcano built up by many layers of hardened lava

Gulf Currents

Warm ocean current, part of a general clockwise-rotating system of currents in the North Atlantic. A major contribution of the Gulf Stream is its warming effect on the climates of adjacent land areas.The Gulf Stream has an average speed of 4 mi (6.4 km) per hr but slows down as it widens to the north.

Plate Tectonics

Plate tectonics may boost biodiversity by recycling chemicals and minerals through the crust.If it were any less massive, it would probably not have plate tectonics.Plates at our planet’s surface move because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move.

oceans

The Pacific Ocean stretches from Antarctica’s Ross Sea to the Bering Sea off Alaska. Its widest point occurs at approximately 5°N latitude.It also covers about 46% of earths water surface.

Water Cycle

The water cycle is very impotant to sustain life on Earth.  The water evaporates and then turns into cloudes.  Then it falls back down in the form of either rain, snow or ice.  The water that flows into rivers and streams eventually flows back into the ocean.  The water that lands on mountians and hills flows down into rivers and streams, is called runoff.  From the ocean, it evaporates back into clouds and starts the whole cycle over again.