Exam 1 Flashcards
James Hutton developed what doctrine?
Doctrine of uniformitarianism
In 18th century
Which is all chemical and physical laws that operate today were also operating in geological past
What is the doctrine of catastrophism
All land forms on earth were produced by catastrophic events
List the stages of the nebular hypothesis
Stage 1 contraction of nebula Stage 2 rotation and flattening of nebula Stage 3 formation of planetary rings A) inner rings - rocky to metallic B) outer rings - gaseous Stage 4 accretion of the planetary rings
Explain Stanley millers experiment of 1953
He recreated an early atmosphere add electricity and created amino acids (proteins necessary for DNA)
Two sources of energy for natural disasters?
Internal and external energy
List the internal energies
What is the external energy?
Impact energy
Gravitational energy
Radioactive energy
External energy comes solar radiation
The lithosphere contains
Oceanic crust( composed of basalt)and continental crust (similar to granite)
Describe at asthenosphere
It is hot, weak , mobile
What makes something a mineral
It has to naturally occurring
Inorganic (can’t be a product of living things)
Solid
Specific chemical composition
Crystalline structure
List the main rock types
Sedimentary
Metamorphic- alteration of other rocks by high temps and pressures
Igneous (basalt and granite are common igneous rocks)
What is relative dating
Determining the age of rock relative to other rocks
What is absolute dating
It is radiometric dating
(Unstable parent decays to produce daughter product ) half life
Continental margins are
At the edges of all ocean basins and can contain
A) wide and shallow continental shelves
B) narrow and deep oceanic trenches
List the plate tectonic boundaries
Divergent boundaries- moving away from each other
Convergent boundaries- moving toward one another (oceanic crust is destroyed)
Transform boundaries- plates sliding past each other
What drives the asthenosphere to move lithosphere
Convection (heat rising and cold dropping)