continental drift
The German scientist Alfred wegener proposed a hypothesis we now call ?
The continental drift theory
The soft layer of the mantle on which pieces of the lithosphere move
asthenosphere
name the three types of rocks
sedimentary igneous and metamorphic
what is a fault
is a break in the earth
name a layer of the atmosphere
troposhpere stratosphere mesosphere thermosphere
layers that forms the thin outer shell of earth is called?
lithosphere (crust)
the region where an oceanic plate sinks down into the asthenosphere?
what are sedimentary rocks formed from
pieces of existing rocks and organic material
what is an intrusion
a body of igneous rock that has been crystallized from molten magma
what is a ring of fire
a string of volcanoes and seismic activity around Pacific ocean
when did continents first began forming?
about 200 million years ago
The boundary between two colliding tectonic plates
Convergent boundary
how are metamorphic rocks formed
rock changed by heat or pressure
how can I tell which layer is older
the oldest strata being on the bottom whilst the youngest being on top
what is conduction
heat transfer between objects that are touching
continents formed part of a single land mass called a ?
super continent
the boundary between two tectonic plates that are moving away from each other
divergent boundary
what are the two classes or metamorphic rocks
nonfoliated and foliated
relative age is what
is the age of rocks and fossil compared to others
this cause oceans to curve
the coriolis effect
name of super continent
pangea
the boundary between two tectonic plates are sliding past each other horizontally?
transform boundary
what rocks can have vesicular or holey texture
extrusive rocks
how are the layer of the atmosphere classified
its classified by heat