Contidential Drift
What is contidential drift
the ides that Earths continents were once joined together as on land mass called Pangea but over the years, slowed moved away
What are tectonic plates
large pieces of earths crust
what is a convergent plate boundry
when plates move toward each other and form mountains volcanoes and trenches
Which layer comes first and what is there to know about it
Crust: thin outer layer were we live
What is a fault
A crack were rock moves
What was Pangea
a supercontinent that existed long ago
What are the layers of earth in order (highest to lowest)
crust, asthenosphere, mantle, outer core, inner core
What is a divergent boundry
When plates move apart from each other were new crust forms (mid ocean-ridge)
What is the 2nd Earth layer and what is there to know about it
Mantle: Thick layer beneath crust and semi-molten
What is a focus
Where earthquakes start underground
What are fossils
preserved remain of plants or animals
What is plate tectonics
plate tectonics explains how large pieces of earths outer layer, called tectonic plates move slowly over the layer beneath them
what is a transform boundry
When plates slide past each other and causes earthquakes (Keep sliding until it forms)
What is earths 3rd layer and what is there to know about it
Outer Core: Liquid iron and nickel
What is an epicenter
The point on Earths surface above the focus
What was some evidence of the continents being joined together
continents fit like puzzle pieces, similar fossils found on different continents, matching rock layers, and climate evidence
the lithoshpere is________ and the asthenosphere is__________
the crust and upper mantle; the soft layer beneath the lithosphere
What happens to a transform fault (transform boundary)
A volcano or earthquake forms
What is earths final layer and what is there to know about it
Inner core: Solid iron and nickel
What are siesmic waves
Energy waves that cause tectonic plates to shake
The reasons of the confidential drift is because
Subduction, Spreading, and Lateral Sliding
what is a faultline
A crack in the earths surface that makes two plates shift apart that causes earthquakes
What happens when the plates collide together
it forms trenches (going down into the mantle) or it forms mountians, volcanoes (going up)
What helps drive plate movement
Heat from the inner core
Why do Earthquakes occur
Stress builds up between plates and then energy is released suddenly