Question 1

A datum represents&#10;A)a reference surface used in computing coordinates.&#10;B)a zero point from which to calculate elevations.&#10;C)the origin point for longitude measurements.&#10;D)the curvature of the Earth,used in computing latitude and longitude.

Accepted Answer

A datum is a reference surface used in computing coordinates. It is used as a starting point to measure locations and heights on the earth's surface.

Question 2

A map projection is a&#10;A)translation of locations on the Earth's surface to their corresponding locations on a flat surface.&#10;B)model of the Earth in regards to size and shape of objects on the Earth's surface.&#10;C)representation of how time zones are distributed with respect to geographic boundaries.&#10;D)system used in translating decimal degrees to other forms of measurement.

Accepted Answer

A map projection is a method of transforming the curved surface of the Earth onto a flat map. It involves projecting the spherical Earth onto a flat surface, resulting in some degree of distortion in terms of size, shape, distance, or direction.

Question 3

The 180th meridian refers to the&#10;A)compass rose line.&#10;B)equator.&#10;C)prime meridian.&#10;D)international date line.

Accepted Answer

The 180th meridian is also known as the International Date Line. It is an imaginary line on the Earth's surface that marks the transition between one calendar day and the next. When you cross the International Date Line from east to west, you lose a day, and if you cross from west to east, you gain a day. It is located on the opposite side of the Earth from the Prime Meridian (0 degrees longitude).

Question 4

One minute of latitude is equivalent to&#10;A)60 degrees of latitude.&#10;B)1 degree of longitude.&#10;C)60 seconds of latitude.&#10;D)60 meters.

Accepted Answer

One degree of latitude is divided into 60 minutes, and each minute of latitude is equivalent to 60 seconds of latitude. Therefore, one minute of latitude is equal to 1/60th of a degree of latitude, or 1 nautical mile (which is approximately 1852 meters).

Question 5

The origin point for 0 degrees longitude is&#10;A)Greenwich,England.&#10;B)Washington,D.C. ,USA.&#10;C)Paris,France.&#10;D)San Salvador Island,the Bahamas.

Accepted Answer

The origin point for 0 degrees longitude is the Prime Meridian which passes through Greenwich, England. It was established by international agreement in 1884 and is used as a reference point for calculating longitude around the world.

Question 6

What is used to ensure that UTM measurements of the southern hemisphere have a positive value?&#10;A)A false northing value&#10;B)A false easting value&#10;C)A false southing value&#10;D)A false polar value

Accepted Answer

A false northing value is added to ensure that UTM measurements in the southern hemisphere have a positive value. This is because the equator is used as the reference point for the northern hemisphere, whereas in the southern hemisphere a false northing value is added to ensure that all coordinates are positive.

Question 7

The shortest distance between two points on a sphere is the&#10;A)great-circle distance.&#10;B)longitude distance.&#10;C)equatorial distance.&#10;D)datum distance.

Accepted Answer

The great-circle distance is the shortest distance between any two points on a sphere. It is the equivalent of a straight line on a flat plane. Longitude distance and equatorial distance are not accurate measures of distance on the surface of a sphere. Datum distance is not a recognized term in geography.

Question 8

How are SPCS zones determined?&#10;A)By every 3 degrees of longitude and every 3 degrees of latitude indicating a new zone&#10;B)By every 2,000,000 feet beginning a new zone&#10;C)By the geographic boundaries of states and counties&#10;D)By using the states' outlines for the boundaries,then cutting each state exactly in half

Accepted Answer

SPCS zones are determined by the geographic boundaries of states and counties. The zones are designed in a way that each zone is reasonably compact and has a unique number or letter designation. This allows for accurate mapping and surveying within a specific area. The boundaries of the zones are often based on the state or county lines to ensure that they align with existing boundaries and minimize confusion.

Question 9

Each UTM zone covers how many degrees of longitude wide?&#10;A)3&#10;B)6&#10;C)15&#10;D)30

Accepted Answer

UTM zones are 6 degrees of longitude wide, designed to provide a global coverage with minimal distortion for accurate mapping and navigation.

Question 10

If it is 10pm Sunday night in London,England,what day and time is it in New York City,New York?&#10;A)3am Sunday&#10;B)5pm Sunday&#10;C)3am Monday&#10;D)10pm Monday

Accepted Answer

New York City is 5 hours behind London. Therefore, if it is 10pm Sunday in London, it is 5pm Sunday in New York City.

Question 11

Where is the WGS84 datum used for measurements?&#10;A)The whole world,except for the north and south poles&#10;B)Only the entire northern hemisphere&#10;C)At all points across the world&#10;D)Only in North America

Accepted Answer

The answer of Where is the WGS84 datum used for...

Question 12

UTM coordinates are measured in&#10;A)degrees,minutes,and seconds.&#10;B)miles.&#10;C)meters.&#10;D)feet.

Accepted Answer

The answer of UTM coordinates are measured in&#10;A)degrees,minutes,and seconds.&#10;B)miles.&#10;C)meters.&#10;D)feet....

Question 13

A model of the Earth based on mean sea level is&#10;A)geoid.&#10;B)spheroid.&#10;C)ellipsoid.&#10;D)a great circle.

Accepted Answer

The answer of A model of the Earth based on...

Question 14

Each UTM zone uses a false easting value of&#10;A)50 miles.&#10;B)500,000 m.&#10;C)10,000,000 ft.&#10;D)15 degrees of longitude.

Accepted Answer

The answer of Each UTM zone uses a false easting...

Deck 2: Where in the Geospatial World Are You