Shared Flashcard Set

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midterm review
studyyy
16
Science
7th Grade
12/13/2011

Additional Science Flashcards

 


 

Cards

Term
asthenosphere
Definition
the plastic layer of the mantle which lithosphere move.
made of solid rocks that move slowly
Term
Lithosphere
Definition
the outermost ridged layer of the earth
its made of 2 main parts the crust and the upper part of the mantle.
its divided into pieces called techtonic plates.
Term
mesophere
Definition
beneath the asthenopshere is the strong lower part of the mantle called the mesophere.it is the biggest.extends from the bottom of the asthenosphere to the earths core .meso means middle
Term
plate boundaries
Definition
place where two techtonic plates meet
Term
convergent
Definition
-><-
two techtonic plates collide
Term
divergent
Definition
<- ->
two techtonic plates seperate
Term
transform
Definition
two techtonic plates slide past eacother
Term
alfred wegener
Definition
proposed the theory of continental drift
Term
pangea
Definition
"all continents"
given name to super continent
Term
seafloor spreading
Definition
happenes at divergent boundaries.machanism for continental drift
Term
earthquakes
Definition
produce seismic waves the san andreas fault in california experiences many earthquakes
Term
mountains
Definition
created at convergent boundaries
Term
volcanoes
Definition
mainly occur at plate boundaries .the ring of fire is a chain of active volcanoes around the pacific ocean
Term
charistics of a mineral
Definition
.nonliving
.naturally formed
.solid
.chrystalline structure
Term
mineral properties
Definition
.color
.luster(the way the light reflects=glassy,briallant,metallic.ect)
.streak (color of powder)
.hardness
.transparency
.cleavedge/fracture=how it is broken
.special properties
Term
groups of minerals
Definition
.sillicate
.nonsilliscate
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