2018年12月15日星期六

review

Map 
maps serve two purpose 
As a reference tool to identify and object's absolute and relative location. 
As a communication tool to convey the distribution of human activities or physical features 
Earliest map were prepared by Eratosthenes (276-194B.C.) 
Improvements to world map later made by Ptolemy. 
scientific method pf transferring locations on earth's surface to a flat map is called projection. 
Four types of distortion 
shape of an area can be distorted 
distance between points may become increase or decrease 
Geographic grid is a system of imaginary arcs drawn in a grid pattern on earth's surface. 
Meridians are arcs drawn between the north and south poles each is numbered, according to a system known as longitude 
parallels are arcs drawn parallel to the equator and at right angles to meridians, each is numbered, according to a system known as latitude values range from 0 to 90 north or south 
Earth as a sphere is divided into 360 of longitude. 
divide 360 by 24 time zones (one for each hour of a day) equals 15 
Greenwich at dime meridian (0 longitude) 
Passes through Royal observatory at Greenwich, England 
The international date line is located on 180 longitude 
Global Positioning system: 
1 Satellites placed in predetermined orbits 
2 Tracking stations to monitor and control satellites 
3 Receiver that locate at least four satellites, figure out its distance from each. and use the information to calculate its precise location. 
Location can be identified in three ways: 
1 Place names 
2 Site 
Site is Physical Character of a place 
3 situation 
situation is the location of a place relative to other places 
1 Formal Region (aka uniform region or homogeneous region) 
An area in which everyone shares in common one or more distinctive characteristic 
ex: Common language, economic activities or climate 
2 Functional Region (aka nodal region) 
an area or organized around a node for focal point 
3 vernacular Region (aka perceptual region) 
An area that people believe exists as part of their cultural identity 
culture is the body of customary beliefs, material traits and social forms that together constitute the distinct tradition of a group of people Two meanings to care about to care for 
Globalization is a force for process that involves the entire world and results in making something worldwide in scope 

没有评论:

发表评论

The last Humangeo class

Ok... it is really sad to say goodbye, but the good thing is we can still meet in the School! I have a Robotic competition this Sunday and ...