Map skills Flashcards
Give the definition for a contour line
Symbolic horizontal lines which indicate the heigh and shape of a slope
What is a contour interval
The distance between each contour
What do you call someone who makes maps
Cartographer
What is gradient
The angle of a slope compared to the horizontal (describes the steepness of a slope)
How do you calculate gradient
vertical height difference/horizontal height difference
If the contour lines are closer together the slope is?
STEEP
If the contour lines are far apart, the slope is?
GENTLE
The U shaped contour line represents ?
Spurs
The V shaped contour line represents?
A river valley
What is the acalew for an Orthophoto Map
1:10 000
What is an orthophoto map?
A rectified image based on an aerial photograph with additional information from a map
What are the 5 things Orthophoto maps display?
Place names contour lines height road numbers grid
Vertical Aerial Photograph
Show’s the land from directly above earths surface
Oblique Aerial Photograph
Shows the land from above, but at an angle
What is a topographic map?
It is a map that shows the shape of the land and the different features on land
What is the scale for a topographic map
1:50 000
What does a scale of 1: 10 000 mean?
This means that 1cm on the map represents 10 000cm/100 m on the ground
What is a perennial river?
A river that flows throughout the year
What is a non-perrenial river?
A river that only flows some of the time, during a rainy season
Name the 4 ways how height is shown on a topographic map
Trig Beacons
Spot Heights
Contour Lines
Benchmarks
