Flashcards in Lecture 11 Deck (54)
What are the three rock types?
What is igneous rock?
Rocks formed by solidification of molten magma. These can be found on the earths surface or under the surface
What are the two types of igneous rock?
Intrusive igneous rock: Rock inside or under the earths surface
Extrinsic igneous rock: rock formed on the outside of the earths surface
What is denudation?
Wearing down of a landmass that can expose an intrusive igneous rock
What is weathering?
The breakdown of rock by physical, chemical and biological ways
What do subduction zones do?
Bring rock back to the mantle
What are the four measures of geologic time?
Eons, eras, period and epochs
What is the order from longest to shortest geologic time measurements
Eons > eras > period > epoch
What is uniformitarianism?
Landforms on the earths surface are caused by slow geomorphic processes not sudden events
What is catastrophism?
Sudden events shaping modern landforms
True or False:
Catastrophism and uniformitarianism are very similar theories
False they are opposite
What theory is evolution based on?
What is sedimentary rock?
Formed by the burial, compression and chemical modification of deposited weathered debris
What is a metamorphic rock?
Heat or pressure physically or chemically changing a rock.
What are rocks made up of?
What are the four types of igneous rock? And an example of each. And name one rock that is the exception
Give a two examples of sedimentary rocks.
Conglomerate and sandstone
What are two examples of metamorphic rock?
Slate and shale
What are the three layers of the earth?
core, mantle, crust
What two elements make up the earths core?
Iron and nickel
What defines the two sections of the earths core?
Inner core is solid
Outer core is liquid
What is the origin of all rocks?
What differs the asthenosphere from the rest of the mantle?
It is the upper portion of the mantle that is made of more ridges rocks
What type of rock is the upper mantle made up off?
Ultramafic igneous rock
How does the lower mantle move?
As a hot plastic
What is the lithosphere?
Includes crust and upper most portion of the mantle and it glides over the rest of the mantle. This is the location where earthquakes volcanoes and continental drift.
What are the two types of crust?
Oceanic which is thinner and continental which is thicker
The rising and sinking of tectonic plates due to weight distributed on a point. Glaciers have this affect on tectonic plates making them sink, then in a delayed reaction once the ice melts the plates rebound.
What are four pieces of evidence supporting continental drift?
Fossils, paleoclimatic regions, puzzle piece fit, rock and mountain ranges.