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8th gr Sci ch 3 test

8th grade science ch 3 test review

A simplified image that is a model of part of the earth's surface. map
Is indicated on the map by 2 numbers separated by a colon. The larger the scale fraction, the larger the scale of the map Map Scale
mapmakers Cartographer
North, South, East, West Cardinal Directions
The most important great circle to a cartographer, divides the Northern Hemisphere from the Southern Hemisphere Equator
Circles on a globe are called lines of latitudes Parallel
Lines of Longitude Meridian
Latitude and longitude together Geographic coordinates
Transfer of geographic info on a 3D globe onto the 2D surface of a map. ______________ always create various kinds of distortions in a map when modeling the earth's surface Map Projection
Show elevations on the map above some standard height, such as sea level Contour Lines
Displays certain kinds of related information to produce a unified theme. Any map that emphasized non-geographic data, such as rock compositions is a ________________. Thematic Map
A system that uses digital map data, programs, hardware and data storage systems to create and display info on maps. Involves trained users who gather, plot and analyze geographic information. GIS
Why are maps important for life? To prevent sickness and for navigation
Why mapmaking is modeling? b/c ur making a model of an area
Why do we need map coordinates? to show our position
How do u find ur location on a map? By using the map coordinates
Summarize map features includes: legend, directions, coordinates, etc.
What r the 3 main types of map projections equilateral, polar, oblique
What r the properties & uses of the common map projections Map projections attempt to minimize distortion of earth features in the area of interest. (Gnomic, Conic, Cylindrical)
Name 3 major types of maps political, Geographic, Topographic
What is the use of contour lines in the topographic maps shows elevation on the map
What is the concept of map theme: It is a unifying idea
What does GIS stand for? Geographic Information System
What is the main use of GIS? Produces thematic maps that help people solve problems
What are the sources of GIS data? computers
Explain how GIS maps are used to help people. Businesses use them to help build stores, the military uses them to track friendly and enemy units, it helps them to know the range of weapon systems
One degree = 60 nautical miles
1 degree = 60 minutes
__________ are models of the earth's surface. Maps
We make maps to ... 1. find where we are 2. know the power of other things on the face of the earth 3. to understand how they relate to each other
The ______________ determines what features it can show. scale of a map
Large-scale maps are useful for showing _____________________. small geographic features
Small-scale maps can show only __________________. large geographic features
Maps use artificial landmarks, _____________________, to locate features a geographic grid
_______ maps show a distorted view of the earth's spherical surface Flat
Small circles parallel to the Equator latitude
Great circles passing thru the North and South Poles longitude
Geographic positions are combinations of latitude and longitude coordinates, expressed in _________, __________, & ___________. degrees, minutes, seconds
___________ measures your position north or south of the Equator. Latitude
___________ measures your position west or east of the Prime Meridian. Longitude
Maps often display many standard features including a ____________, ___________, & ____________. map scale, symbol legend, a north arrow
_______________ are ways to accurately transfer details on the earth's surface to a flat mapping surface while minimizing certain kinds of distortion. Map projections
Three main geometric map projections are __________, ___________, & ______________. gnomonic, cylindrical, conic
_____________ are used for polar maps of the poles Gnomonic polar projections
_____________ are used for middle-latitude maps Conic Projections
_____________ are used for maps along the Equator or other great circles. Equatorial projections
__________ maps can be political, geographic, topographic or combinations of these. Standard
________maps display information organized w/ a single concept or theme plotted on a standard map. Often _______ information is not related to its physical location on the earth's surface, but when plotted on a map, it gains geographic significance Thematic maps
____________ technology greatly improves the ability of maps to reveal unsuspected relationships among different kinds of data. Geographic information system (GIS)
GIS maps display information on __________ layers, which can be turned off or on as desired. thematic
Modern mapmaking receives information from many sources, including __________, ___________, and ____________. standard surveying, remote sensing sources, ocean-floor mapping
Maps and mapping are important tools for humans to exercise wise ____________ and benefit other people. dominion
Acoustic sensing can be used on the _________ floor ocean
Started the use of GIS layers John snow
Arrows on maps always point which direction North
0 degrees latitude = the equator
0 degrees longitude = the prime meridian
180 degrees longitude = the international data line
180 degrees latitude = Pacific ocean
Most important feature on a map = its copyright
Where was the earliest map made? Babylon
Created by: bgpalmers
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