Topography Skills Flashcards

1
Q

What does the contour represent?

A

The lay of the land.

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2
Q

How is relief shown on a contour map?

A

Using contour lines.

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3
Q

What are the three methods used to show relief?

A
  • Contour lines
  • Spot heights
  • Shading
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4
Q

What do spot heights indicate?

A

The exact altitude above sea level.

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5
Q

What is a contour?

A

A line that joins points of equal elevation.

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6
Q

What is a contour interval?

A

The vertical distance between contour lines.

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7
Q

Fill in the blank: A _______ is a line that joins points of equal elevation.

A

[contour]

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8
Q

Fill in the blank: The vertical distance between contour lines is known as the _______.

A

[contour interval]

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9
Q

What do contour lines close together show?

A

steep slopes

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10
Q

what do contour lines far apart show?

A

gentle slopes

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11
Q

what do contour lines evenly spaced show?

A

uniform slope

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12
Q

How do we know if the slope is convex?

A

If the spacing decreases
when going from high to low,
the slope is convex

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13
Q

How do we know if the slope is concave?

A

If the spacing increases
when going from high to low,
the slope is concave

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14
Q

How are hills represented on a topographic map?

A

Hills are represented on a
topographic map by a series of
concentric contour lines in a
rough circle

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15
Q

What is the degree representation for North?

A

0/360

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16
Q

What is the degree representation for South?

17
Q

What is the degree representation for East?

18
Q

What is the degree representation for West?

19
Q

What is a bearing simply?

A

Simply, a bearing is an angle

20
Q

What is a bearing complicated?

A

It is the angle measured clockwise from a fixed zero line, generally north.

21
Q

What are 3 points about cardinal direction?

A
  • compass points
  • 32 in total,
  • only 16 are used
22
Q

In words, what is 1:10?

A

For every 10 metres you travel across you are going up 1 metre.

23
Q

What is 1:1?

A

a 45 degrees

24
Q

What is gradient?

A

A method of expressing ground slope

25
How do you calculate local relief?
Local relief is calculated by finding the difference in height between the highest and lowest points along an entire journey
26
What is Aspect?
Aspect is the direction that a feature such as a slope or building faces
27
How do you find the rise in "rise over run"?
Height of point A - point B
28
How do you find the run in "rise over run"?
distance on map multiplied by the map scale
29
What does the top number in rise over run always have to be?
1