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What is it called when tectonic plates are pushed together?
Convergent boundary
What is it called when two plates converge, 1 plate goes under another?
Subduction boundary
Where do convection currents happen?
Mantle
What is Gravity Pull?
The force, first described mathematically by Isaac Newton, whereby any two objects in theuniverse are attracted toward each other
What are tectonic plates?
A massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere
How does a convergent plate boundary cause earthquakes?
The plates move towards one another and this movement can cause earthquakes.
How many Major (big) plates are there?
7
What are plates composed of?
Continental and/or oceanic crust plus a small part of the upper mantle
What are Ocean Trenches?
A long narrow steep-sided depression in the earths oceanic crust, usually lying above asubduction zone
What are Convergent boundaries?
Locations where lithospheric plates are moving towards one another
What is it called when tectonic plates move apart?
Divergent boundaries
How many minor (small) plates are there?
5
What happens at transform plate boundary?
Shallow earthquakes, large lateral displacement of rock, and a broad zone of crustal deformation
What is the ring of fire?
The linear zone of seismic and volcanicactivity that coincides in general with themargins of the Pacific Plate
What are transform plate boundaries?
A broad zone forming as the Pacific Plate slides northwestward past the North American Plate
What do convergent plate boundaries form?
Towering mountain ranges
The lava floates to the surface ______ ______
Creating mountains
Where do mid-ocean ridges form?
On boundaries where plates are spreading apart (divergent plate boundaries)
What is Divergent boundaries?
A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earths surface between the two plates
What is a fault line?
Transform boundaries that cause earthquakes
What are the two types of plate boundaries that are most likely to produce volcanic activity?
Divergent plate boundaries and convergent plate boundaries
Formed when two tectononic plates diverge, ________ ______ erupt
Underwater Volcanos
What is the continental drift?
Describes one of the earliest ways geologists thought continents moved over time
What is the Mid-Atlantic Ridge?
9 a north-south sub-oceanic ridge in the Atlantic Ocean from Iceland to Antarctica on whose crest are several groups of islands
What are convection currents?
Currents that cause the movement of the tectonic plates that make up the earth's crust