Earth Layers
The thickest layer of earth.
the mantle
about 260 million years ago there was a supercontinent called
Pangea
There are 3 types of plate boundaries
Divergent, Convergent, Transform
Two plates move apart in a place called...
Divergent Boundaries
These two types make up the top layer of earth
Continental Crust and Oceanic crust
This part is the liquid layer of Earth.
outer core
True or False
earth’s lithosphere is in slow motion driven by convection currents in the mantle
True
Breaks in the Earth’s crust where rocks have slipped past each other.
faults
The place where two plates meet is called...
A convergent boundary
This crust is the denser outermost crust.
Oceanic crust
This dense layer is about 6 400 km from the surface of earth
the inner core
the approximate age of the Earth (in billion years)
4.6 billion years old
Earthquakes occur most frequently along these plate boundaries.
Transform Boundaries
A rift valley occurs with this boundary.
Divergent
This boundary is where two plates slide past each other moving in opposite directions.
Transform boundary
This section of Earth is made up mostly of iron and some nickel
Core
They rise in the asthenosphere and cause movement of the Earth’s plates.
convection currents
Most divergent boundaries occur at the….
Mid ocean ridge
When two plates carrying continental crusts collide, they form…
Mountain ranges
The United States of America lies on this plate
North American Plate
The 5 layers of earth are... (Clue: the first is the Lithosphere)
lithosphere, asthenosphere, mesosphere, outer core, inner core
Convection is the movement of matter that results from differences in density caused by…
Variations in temperature.
The denser plate dives under the other plate in a process known as...
Subduction
The San Andreas fault in California is an example of what plate boundary?
Transform boundary
Name 3 types of evidence for proof of continental drift
Reptile Fossil clues, Plant fossil clues
Climate
Rocks
Geologic Formations
Puzzle Like Fit