BRAINSCAPE1
GEOS 1004 Exam 1 Exam with
complete solutions latest version
Theory - CORRECT ANSWER-explanatory idea that has been extensively tested and
yet to fail.
Big Bang found what? - CORRECT ANSWER-That most of the universe is Hydrogen
and Helium (H & He)
Elements heavier than H & He are produced where? - CORRECT ANSWER-In the stars
(found through nuclear physics)
Terrestrial Planets - CORRECT ANSWER-Mercury, Veuns, Earth, Moon, & Mars
Jovian Planets - CORRECT ANSWER-Jupiter, Saturn, Uranus, Neptune
Solar systems planets orbit in... - CORRECT ANSWER-The same direction and plane
and rotates in the same direction. Tend to be rocky close to star because condensed
gases are further away.
Nebular Hypothesis - CORRECT ANSWER-clouds of gas(nebulae) and dust form via
gravitational attraction.
1. clouds condense & begin to rotate
2. cloud becomes lumpy
3. central lump becomes star
4. smaller lumps become planetesimals which then come together into planets
(planetary accretion)
Necessary consequence - CORRECT ANSWER-gas/dust clouds in deep space,
exoplanets, some still in system, planets show evidence of accretion, impacts on
earth(craters)
Earths crust is made of these 5(from high to low) - CORRECT ANSWER-Oxygen (46),
Silicon(28) Aluminum(8), Iron(6), Magnesium(4)
BRAINSCAPE1
, BRAINSCAPE1
Earth is layered in what order (outmost to inmost) - CORRECT ANSWER-Crust
Upper Mantle
Lower Mantle
Outer core
Inner core
How did the moon come about? - CORRECT ANSWER-accretion...
Moon rock is similar to earth but older.
During the mid stages of earths accretion a large body impacted earth and debris came
off, the rotation of the earth sped up and reformed as a molten body and the moon
aggregated from the debris.
Plate Tectonics - CORRECT ANSWER-Theory that earth is shaped by moving
lithospheric plates
- Modified by Wegner's hypothesis of continental drift which was based on
circumstantial evidence
Circumstantial evidence for continental drift - CORRECT ANSWER--Glaciers would
have to cross equator, unless the continents were at the south pole
-Animals and plants would have to cross the oceans, unless continents were connected
-Rocks that match up are coincidences, unless continents were connected
-Structures and mountains that match up are coincidences, unless the continents were
connected
Why was circumstantial evidence not believed? - CORRECT ANSWER-Tidal
mechanisms for movements too weak and continental rock too weak to move through
oceanic rock
Earths Magnetic Field - CORRECT ANSWER-generated by convection within the liquid
outer core
What gives us latitude - CORRECT ANSWER-the tilt of the magnetic field
Magnetic studies in the 50s show what? - CORRECT ANSWER-North pole seems to
have moved randomly and split
Sea Floor Mapping - CORRECT ANSWER-found ocean has topography
Hess & Dietz (1960s) - CORRECT ANSWER-explain ocean topography and
earthquakes
- ranges and trenches
BRAINSCAPE1
GEOS 1004 Exam 1 Exam with
complete solutions latest version
Theory - CORRECT ANSWER-explanatory idea that has been extensively tested and
yet to fail.
Big Bang found what? - CORRECT ANSWER-That most of the universe is Hydrogen
and Helium (H & He)
Elements heavier than H & He are produced where? - CORRECT ANSWER-In the stars
(found through nuclear physics)
Terrestrial Planets - CORRECT ANSWER-Mercury, Veuns, Earth, Moon, & Mars
Jovian Planets - CORRECT ANSWER-Jupiter, Saturn, Uranus, Neptune
Solar systems planets orbit in... - CORRECT ANSWER-The same direction and plane
and rotates in the same direction. Tend to be rocky close to star because condensed
gases are further away.
Nebular Hypothesis - CORRECT ANSWER-clouds of gas(nebulae) and dust form via
gravitational attraction.
1. clouds condense & begin to rotate
2. cloud becomes lumpy
3. central lump becomes star
4. smaller lumps become planetesimals which then come together into planets
(planetary accretion)
Necessary consequence - CORRECT ANSWER-gas/dust clouds in deep space,
exoplanets, some still in system, planets show evidence of accretion, impacts on
earth(craters)
Earths crust is made of these 5(from high to low) - CORRECT ANSWER-Oxygen (46),
Silicon(28) Aluminum(8), Iron(6), Magnesium(4)
BRAINSCAPE1
, BRAINSCAPE1
Earth is layered in what order (outmost to inmost) - CORRECT ANSWER-Crust
Upper Mantle
Lower Mantle
Outer core
Inner core
How did the moon come about? - CORRECT ANSWER-accretion...
Moon rock is similar to earth but older.
During the mid stages of earths accretion a large body impacted earth and debris came
off, the rotation of the earth sped up and reformed as a molten body and the moon
aggregated from the debris.
Plate Tectonics - CORRECT ANSWER-Theory that earth is shaped by moving
lithospheric plates
- Modified by Wegner's hypothesis of continental drift which was based on
circumstantial evidence
Circumstantial evidence for continental drift - CORRECT ANSWER--Glaciers would
have to cross equator, unless the continents were at the south pole
-Animals and plants would have to cross the oceans, unless continents were connected
-Rocks that match up are coincidences, unless continents were connected
-Structures and mountains that match up are coincidences, unless the continents were
connected
Why was circumstantial evidence not believed? - CORRECT ANSWER-Tidal
mechanisms for movements too weak and continental rock too weak to move through
oceanic rock
Earths Magnetic Field - CORRECT ANSWER-generated by convection within the liquid
outer core
What gives us latitude - CORRECT ANSWER-the tilt of the magnetic field
Magnetic studies in the 50s show what? - CORRECT ANSWER-North pole seems to
have moved randomly and split
Sea Floor Mapping - CORRECT ANSWER-found ocean has topography
Hess & Dietz (1960s) - CORRECT ANSWER-explain ocean topography and
earthquakes
- ranges and trenches
BRAINSCAPE1
