CONS 127 Study Set | Questions & Answers Solved
100% Correct.
1482 Map (very detailed)
First map to use coordinate system (drawn Ptolemy)
Latitude
angle that describes north-south position (horizontal line)
Longitude
angle that describes east-west position(vertical line)
Parallel
Lines of latitude(cuz they run parallel to each other) connect all locations within given latitude
Equator
0 degree latitude(biggest parallel)
midway between poles
Poles
points where the Earth's axis of rotation meets its surface
Arctic circle
66.5 degrees N
Southernmost latitude in N hemisphere where sun can remain continuously above or below
horizon for 24hrs)
,Antarctic circle
66.5 degrees S
Northernmost latitude in S hemisphere where sun can remain continuously above or below
horizon for 24hrs)
Tropic of Cancer
23.5 degrees N
Northernmost latitude where sun can be directly overhead
Tropic of Capricorn
23.5 degrees S
Southernmost latitude where sun can be directly overhead
Earth's axial tilt
23.44 degree tilt
Summer solstice(June)
N hemisphere tilted toward sun
Longest day of year in N
Shortest day of year in S
Sun directly over tropic of Cancer
Winter solstice(December)
S hemisphere tilted toward sun
Longest day of year in S
,Shortest Day of year in N
Sun directly over tropic of Capricorn
Vernal/Autumnal Equinox
Sun directly above equator
Longitude
angle that describes east-west position
Meridian
half of an imaginary great circle, terminating at poles
connecting points of equal longitude
Prime Meridian
0 degrees longitude
Origin of Measures of longitude
passes through Greenwich
Shape of the Earth(geodesy)
Geoid, Ellipsoid, Sphere(most to least accurate)
Geoid
Physical approximation of earth.
Shape of calm oceans(no wind or tide).
Computed using gravity readings(satellite Grace).
Measures surface elevations with high accuracy.(earthquake prediction)
, Ellipsoid
Mathematical approximation of earth
Flattened at poles, bulges at equator.
Uniquely defined by two numbers:
Semi-major(a) semi minor axis(b).
a>b.
Sphere
Simplest approximation of earth
radius is constant
a=b
Shape of earth
not perfect sphere, close to ellipsoid(most useful approximation)
Geodesy
Science that determines shape and dimensions of the Earth
Map projection
formulae and equations used to show earths curved surface on a flat map
Globe
only a globe can represent all of earths metric properties(area, distance, shape/direction)
Can a 2dmap preserve every metric property?
NO
100% Correct.
1482 Map (very detailed)
First map to use coordinate system (drawn Ptolemy)
Latitude
angle that describes north-south position (horizontal line)
Longitude
angle that describes east-west position(vertical line)
Parallel
Lines of latitude(cuz they run parallel to each other) connect all locations within given latitude
Equator
0 degree latitude(biggest parallel)
midway between poles
Poles
points where the Earth's axis of rotation meets its surface
Arctic circle
66.5 degrees N
Southernmost latitude in N hemisphere where sun can remain continuously above or below
horizon for 24hrs)
,Antarctic circle
66.5 degrees S
Northernmost latitude in S hemisphere where sun can remain continuously above or below
horizon for 24hrs)
Tropic of Cancer
23.5 degrees N
Northernmost latitude where sun can be directly overhead
Tropic of Capricorn
23.5 degrees S
Southernmost latitude where sun can be directly overhead
Earth's axial tilt
23.44 degree tilt
Summer solstice(June)
N hemisphere tilted toward sun
Longest day of year in N
Shortest day of year in S
Sun directly over tropic of Cancer
Winter solstice(December)
S hemisphere tilted toward sun
Longest day of year in S
,Shortest Day of year in N
Sun directly over tropic of Capricorn
Vernal/Autumnal Equinox
Sun directly above equator
Longitude
angle that describes east-west position
Meridian
half of an imaginary great circle, terminating at poles
connecting points of equal longitude
Prime Meridian
0 degrees longitude
Origin of Measures of longitude
passes through Greenwich
Shape of the Earth(geodesy)
Geoid, Ellipsoid, Sphere(most to least accurate)
Geoid
Physical approximation of earth.
Shape of calm oceans(no wind or tide).
Computed using gravity readings(satellite Grace).
Measures surface elevations with high accuracy.(earthquake prediction)
, Ellipsoid
Mathematical approximation of earth
Flattened at poles, bulges at equator.
Uniquely defined by two numbers:
Semi-major(a) semi minor axis(b).
a>b.
Sphere
Simplest approximation of earth
radius is constant
a=b
Shape of earth
not perfect sphere, close to ellipsoid(most useful approximation)
Geodesy
Science that determines shape and dimensions of the Earth
Map projection
formulae and equations used to show earths curved surface on a flat map
Globe
only a globe can represent all of earths metric properties(area, distance, shape/direction)
Can a 2dmap preserve every metric property?
NO
