earth and its interior

EARTH AND ITS INTERIOR

BY: Ross Osborne

Volcanoes/Earthquakes

• Volcanoes are caused by Convergent boundaries in the earths surface which is one plate going under another this can also cause mountains to form

• These can be found near the colliding African and Indian plates

• Earthquakes are caused by colliding plates known as transform boundaries which is two plates sliding against each other and can also cause land slides and mud slides

• They can be found near the colliding Juan de fuca and north American plates

Pangaea Pangaea is the name for the super continent

formed by all of today’s continents It ended up disbanding due to continental drift It had disbanded millions of years before

human existence so we only can guess about it because the continents can fit together like puzzle pieces (this concept originally wasn’t accepted)

Pangaea also means all of earth and was thought to exist during the Permian through Jurassic periods.

The original theory was known as anti-mobilist theory

The founder of the theory now a days (Alfred Wegner) was a accomplished geologist as well as meteorologist

The theory was supported by past explorers like magelon who saw how the continents fit together like puzzle pieces

Divergent boundaries This kind of boundary causes trenches

and can be found by the pacific and nazca plates

Our Home We live on the North American plate

which contains the united states One plate we border is the Juan de Fuca

plate One hazard we can expect is

earthquakes and be expected in the faceable future.

The information was found from these sites:

http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml

http://www.pbs.org/wgbh/aso/tryit/tectonics/shockwave.html

http://www.ucmp.berkeley.edu/geology/techist.html

The End