3A
who is a person who creates maps?
cartographer
What are Seagoing Clocks?
What do they help determine?
Clocks that were set at home port before leaving. They would watch local noon change as they traveled. They would compare the local noon time of where they were at to home port.
Used to measure longitude
What is a map projection?
is the transfer of geographic information from a 3D globe to the 2D surface of a map
I want to look and compared the deer population between North Carolina and South Carolina. What kind of map would I use?
Thematic
Acoustic sensing would be best for mapping:
a. ocean floor
b. Mountain ranges
c. moons surface
d. city buildings
What are the cardinal directions?
North, South, East, West
What ocean does the international date line pass through?
Pacific
What are the three types of map projections? and What are the three surface shapes these projection can have?
Equatorial, Polar, Oblique
Cone, Cylinder, Plane
I want to use a map that will show me cities and towns. What type of standard map should I use.
Political
Who would find a benchmark (a physical location on Earth with a fixed geographic coordinate) the most helpful in doing his job?
a. surveyor
b. cartographer
c. map projectionist
d. dentist
The ratio of a distance represented on a map to the same distance on the earth’s surface. What is this?
Map Scale
What is the Equator? What is its degree?
Horizontal line at center of Earth with 0 degrees
What is a Gnomonic Projection?
simplest projection involves flat plane touching
the globe at a point
“light bulb” is at center of Earth to cast
a image
I want to look at the changes of land and elevation in the state of Colorado. What standard map do I use?
Topographic
What do Aircrafts use to take large images of the Earth's Surface?
Remote Sensing
What are latitude lines or "parallels" ?
What are the possible degrees of angles?
What two directions do they divide the Earth?
Are horizontal lines, they can be both small circles and large circles depending on location. They can be 0-90 degrees.
They measure North & South
What is the Prime Meridian? Divides the Earth into what directions?
Line that passes through the center of the earth vertically that goes from 0-180 degrees. Divides into East & West
If you cut it in half what image would the map project.
taking a sheet of paper and wrapping it around the globe forms a cylinder
The cylinder touches the globe along a great circle
I want to look at what river feeds into Lake Jordan, what standard map type will I use?
Geographic
In GIS map data for a city, railroad tracks would most likely be displayed using which data type?
Point, polygon, line
Line
What are longitude lines?
What are the possible angles?
They divide the Earth into what two directions?
Vertical lines that run north and south
0-180 degrees
East & West
I want to look at a detail map of Alamance County to see the various streets in the county. What map would I use large or small scale?
Large Scale
Why do Cartographers want to use Conic Projections?
Where is the point of contact for these projections?
Cartographers use these maps for
middle latitudes of the world
The Poles
A map projection with its point of contact in the center of North America would be a _____________ projection
oblique
What is geographic coordinates?
Would 123.5N 73.2E be a valid set of coordinates?
intersection of latitude and longitude
No look at latitude!