Science10-16 Flashcards
(28 cards)
How did the pads behave when compressed
The green and black pad fooled and resembled mountains the black pad folded easier than the green one
How did the pads react when pulled from opposite ends
The black pad stretched thin and buckled in the middle the green pad only stretched a little
How did the density of the pads affected how they behaved
The thin denser pad moved beneath the less dense thicker green pad
When do two colliding plates form mountains
Non volcanic mountains form when two continental plates with similar density collided
When do colliding plates form trenches
Trenches form when a denser oceanic plate collides with a less dense continental plate or when a older more denser oceanic plate collides with and sub ducts under a younger less dense oceanic plate
Why would deserve oceanic plates slide under a less dense continental plate
The more dense plate sits lower than the less dense plate
Can plates ever move without forming new land
Yes
How do colliding plates cause earthquakes
Colliding plates either bend or fracture causing sudden releases of energy the energy is the earthquake
What cUses the ocean floor to separate and grow
New magma rises in the earth and pushes aside the old rock
What landform is created when the ocean floor sinks back into the earth
A trench
What landform is created when plates separate
A ridge will form just like the mid Atlantic ridge
What landform is created when two continental plates collide
A mountain forms just like the Appalachian mountains
What 3 names r there for the second body wave
Swave
Secondary wave
Transverse wave
What are the 3 names for the first body wave
Pwave
Primary wave
Compressional wave
How does the pwave move
Up and down like tiggers tail through the body of the earth
How does the swave move
Side to side through the body of the earth
How does the surface wave move
It moves side to side ion the surface
Convergent boundary
It is when two plates collide head on and create a convergence
What is a divergent boundary
A divergent boundary is when two plate move in different directions creating a divot
What is a transform fault boundary
When two plates slide of grind against each other they create faults
What do scientists use to study earth’s interior and the bottom of the ocean floor?
Waves like SONAR
The outer core of earth is a
Liquid
The inner core of earth is
Solid
Scientists know the outer core is liquid because
P-waves cannot travel through the outer core
