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8th gr Sci ch 3 test
8th grade science ch 3 test review
| Question | Answer |
|---|---|
| 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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