Skills Flashcards
(45 cards)
What are the four quadrants named?
NE,SE,SW,NW
What is a ground level photograph?
from the perspective of the ground.
affords a 2D view.
Define a vertical arial photograph
Birds eye view looking straight down
what is an aerial oblique photo?
vertical with a slant and in the air.
what are satellite images?
from the sky and only show colours; no distinct landmarks or monuments.
what are the cardinal points?
N , E , S , W
What are all sub points in order of N - E - S - W
NNE, NE, ENE, ESE, SE, SSE, SSW, SW, WSW, WNW, NW, NNW
How do you conduct bearings using a protractor?
Place your protractor with 0° lining up with the north line of where you are measuring FROM.
How many figures is grid reference?
6
How many figures is area reference?
4
where in the square do you measure AR?
the bottom left hand corner.
which comes first in an AR; eastings or northings?
eastings!
*crawl before you walk
distinguish between eastings and northings.
eastings are the VERTICAL lines that move east. Eastings is on the bottom of a map with grid and area reference.
northings are the HORIZONTAL lines that move north. Northings are on the side of a map with GR and AR reference.
what does the distance between contour lines indicate?
closer together = steeper slope.
what is the formula for gradient?
rise/run
aka difference in high between two points/difference in distance between two points
what is aspect of a slope?
the direction in which a slope faces.
what question should you ask yourself to find the aspect of a slope?
if I dropped a ball, which way would it roll down the hill?
or
If I was standing on that slope facing downhill, which direction would I be looking?
explain latitude
latitude are the imaginary lines which run around the circumference of the Earth.
what is the language to describe aspect?
the slope has a northERLY aspect
the slope has a north-eastERLY aspect
explain longitude
Longitude is measured in degrees east or west of the prime meridian, which
runs through Greenwich in London, England, at 0°.
explain the orientation of degrees in latitude and longitude.
0° is the equator for latitude. North of the equator is x° N and the North Pole is 90°N. South of the equator is x° S and the South Pole is 90°S.
Each verticle line is called meridian of longitude and is numbered east to west from the prime meridian at 0° around the earth to 180°
each degree in latitude and longitude can be divided into 60…
minutes.
latitude and longitude is measured similar to…
GRID REFERENCE!
what is the orientation for a latitude and longitude statement (coordinates)
LATITUDE STATEMENT, LONGITUDE STATEMENT.
x° y’ N x° y’ E where x equals degrees and y equals minutes
