Fun Facts
Name the two types of earth's crust
continental and oceanic
When plates collide and one is pushed under the other, this is called_________
subduction
a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle.
Plate Tectonics
When 2 plates pull apart from each other under the ocean it is called
Sea-floor spreading.
The center of the Earth, which is solid due to the pressure from the other layers, however is hot enough to be liquid.
Inner Core
What is the longest continuous mountain chain on earth?
Mid- ocean (Mid-Atlantic) Ridge
A break in the Earth's crust due to movement is a _______________
fault
Type of boundry when plates pull apart or move away from each other.
Divergent boundaries
True or false, Tectonic plates are always moving
True
Layer that is solid, and made up of liquid nickel; and Iron
Outer Core
Name the 3 types of plate boundaries
convergent, divergent, transform
A piece of Earth's crust that sits a top the mantle is
a tectonic plate
What type of boundary exists when 2 plates scrape or slide past each other?
transform boundary
True or False
Sea Floor Spreading causes underwater mountains.
false
What layer makes up 82 % of Earth's volume?
the mantle
Name 2 pieces of evidence that scientists use to justify the plate tectonic theory
Fossil similarities between continents
Matching rock formations across continents
Climate evidence of past glacier activity
A cycle of heating,rising, cooling and sinking in the mantle
convection currents
What type of boundary exists when 2 plates move toward each other or collide?
convergent boundary
true or false
Seafloor spreading causes magma to rise up in the crack and create new sea floor.
True
What is the thin outermost layer of the Earth called?
the Crust.
Who first suggested the theory of continental drift?
Alfred Wegener
The border or zone where 2 or more plates meet and interact is called a
plate boundary
Plates colliding can often cause____________
earthquakes or volcanoes
create mountains
What causes Plate tectonics to move?
Magma flowing beneath the Earth
convection currents
Which layer of the Earth contains the tectonic plates?
The lithospere