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Forestry > GPS Final (12-7-21) > Flashcards

GPS Final (12-7-21) Flashcards

1
Q

Something that predicts spatial relationships and portrays objects form the perspective of space.

A

Map

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2
Q

These individual map themes originally drawn on thin sheets of glass can be placed atop one another on a basemap to depict locations of different things.

A

Layers

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3
Q

This physician often credited as the creator of the first GIS was able to pinpoint the source of a cholera outbreak in London using a basemap along with plotted points of fatalities.

A

John Snow

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4
Q

This component of a spatial database is shown in the form of a table to list one or many different trait belonging to a single feature.

A

Attributes

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5
Q

This feature type is formed from a sequence of at least two coordinates.

A

Line

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6
Q

Feature type formed by a sequence of paired coordinates where the starting point is also the ending point.

A

Polygon

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7
Q

Feature type that only has one set of coordinates.

A

Point

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8
Q

These lines stretch from East to West and are parallel to each other.

A

Latitude Lines

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9
Q

The agency responsible for handling Mississippi GIS needs including imaging, etc.

A

MARIS

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10
Q

The building blocks of a raster data model.

A

Pixels

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11
Q

This dataset uses discreet point-line segments to identify the locations of Earth’s features.

A

Vector

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12
Q

This dataset is displayed as a matrix of rows and columns and represents the Earth’s features with small consistently sized squares.

A

Raster

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13
Q

The spatial relationship among features.

A

Topology

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14
Q

The ______ is the line of 0 degrees longitude.

A

Prime Meridian

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15
Q

These enable the reshaping of Earth by mathematically transforming the spherical coordinates into a 2-D space.

A

Projections

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16
Q

This coordinate system was developed by the US Army Corps of Engineers and is made up of 60 North/South oriented zones that are 6 degrees longitude wide.

A

UTM (Universal Transverse Mercator)

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17
Q

This coordinate system is consistent across the entire US and is utilized after natural disasters.

A

The US National Grid

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18
Q

This coordinate system divides the US into over 120 zones.

A

State Plane Coordinate

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19
Q

This defines the size and shape of the Earth and the origin and orientation of coordinate systems designed to map the Earth.

A

Datum

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20
Q

What is a map’s purpose?

A

To communicate

21
Q

Explain the difference between projections, coordinate systems, and datums.

A

Projections take 3-D Earth and project it to a 2-D surface. Coordinate systems describe the location of a feature and is usually set to a specific projections. Datums describe the shape of the Earth.

22
Q

The 3 projection services.

A
  1. Planar
  2. Cone
  3. Cylindrical
23
Q

The famous London underground map emphasizes ______ position of the terminals.

A

Relative

24
Q

This is the most common and easily recognized of the thematic maps.

A

Choropleth

25
Q

Soft keys on the device are used to access SOLO Forest and ______.

A

T-Cruise

26
Q

Using the device exported shape files will be saved in the following location.

A

My Documents>SOLO>Export

27
Q

This is the proprietary file type for SOLO Forest for data collection and storage.

A

UDF

28
Q

If you wanted to GPS several trees on campus, what type of data collection method would you use.

A

Static Points

29
Q

If you wanted to GPS a square 40 acre tract what kind of data collection method would you use.

A

Dynamic Polygon

30
Q

On a ___________ map the size of the dots vary depending on the attribute values.

A

Dot-Density

31
Q

One must consider four stages of map production. List them below.

A
  1. Real World
  2. Generalization
  3. Selection
  4. Map
32
Q

List the 7 essential items needed for all maps.

A
  1. Title
  2. Scale
  3. Scale Bar
  4. Legend
  5. Creator’s Name
  6. Citations
  7. North Arrow
33
Q

Collecting data about something without touching it.

A

Remote Sensing

34
Q

What is being detected by the sensor of a remote sensing system.

A

Electromagnetic Radiation

35
Q

During the day a sensor can receive reflected and emitted ER at night it can only receive _______.

A

Emitted

36
Q

The first aerial photos were taken from a _______.

A

Balloon

37
Q

The NAV-Star GPS is owned and operated by the _______

A

US Department of Defense

38
Q

GPS receivers equipped with WAAS (wide area augmentation system) can improve accuracy to within _______.

A

3 meters

39
Q

GPS receivers on average are accurate to within ______.

A

15 meters

40
Q

The receiver estimates the distance to the satellites in order to determine position in a process known as ______.

A

Trilateration

41
Q

This president made GPS signals free to everyone.

A

Ronald Reagan

42
Q

The result in changes in tone or the arrangment of tone in a landscape.

A

Texture

43
Q

The size of an unknown object in relation to the size of a known object.

A

Relative Size

44
Q

A lower DOP indicated a better or worse signal.

A

Better

45
Q

An indicator of the quality of geometry or spread of the satellites.

A

Dilution of Precision

46
Q

This type of error is caused when the satellite moves out of position.

A

Orbital Error

47
Q

This type of error is caused by inconsistencies of atmospheric conditions which effect the speed of GPS signals as they pass through.

A

Atmospheric Delay

48
Q

This type of error is caused when the signal has bounced off of a smooth surface before reaching the receiver.

A

Signal Multipath Error

Forestry (16 decks)

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