Rocks
This type of rock is formed under immense heat and pressure.
What are metamorphic rocks?
This increases as river velocity increases.
What is particle size or erosion?
This divergent boundary is located at the center of the Atlantic Ocean.
What is the Mid-Atlantic Ridge?
This is the outermost layer of Earth.
What is the crust?
The age of Earth.
What is approximately 4.6 billion years old?
This rock is only composed of mica.
What is slate?
Erosion decreases on this side of a river's meander.
What is the inside of a river's meander?
This mantle hot spot is located at approximately 63 degrees north and 20 degrees west.
What is the Iceland hot spot?
These two Earth layers make up the lithosphere.
What is the crust and the rigid mantle?
Pangea forms and breaks up during this era.
What is the Paleozoic era?
This type of felsic rock is USUALLY NOT light in color and looks like glass.
What is obsidian?
This is a teardrop-shaped mound of till formed by glaciers.
What is a drumlin?
Trenches and volcanoes form at these zones/areas.
What are subduction zones?
Approximately 3000 km below the Earth's surface serves as a boundary between these two layers of Earth.
What is the stiffer mantle and the outer core?
These three characteristics allow scientists to use index fossils and volcanic ash to date rock layers.
What is being short-lived, living over a wide area, and being easily identifiable?
The relative age of an igneous intrusion compared to the rock layers it cuts through (law of cross-cutting relationships).
What is younger than the rock layers it cuts through?
These are smaller streams and rivers that feed into a larger river.
What are tribituaries?
This heat-driven process (that occurs in the mantle) moves tectonic plates.
What are convection currents?
These two layers' temperatures are hotter than their melting point.
What are the plastic mantle and the outer core?
The Eospirifer lived at the same time the bedrock under this landscape region was deposited.
What is the Erie-Ontario Lowlands?
This type of sedimentary rock is made of minerals that precipitate from water.
What are chemical sedimentary rocks?
This is an abstract outcrop or rock shaped by wind abrasion in a desert (and other dry) areas.
What is a ventifact?
This type of crust is NOT richer in silicon and aluminum than the other.
What is oceanic crust?
At what depth does Earth's interior MELT?
What is ~2900m?
Age of the substance if it has 3.125 of its Uranium-238 left.
What is 22.5 billion years?