Ordnance survey Flashcards
What is scale
Scale is the ratio between distance on the map and corrosponding distance on the ground
What is a map
A map is a drawing or plan of earths surface
What are the three ways scale is represented on the map
Representitive fraction, linear scale, statement of scale
What is ireland divided into
25 sub zones
What is a plateau?
An upland area that is mainly flat
What is a hill?
Land that can rise up to 300 metres
What is a lowland?
A wide area of land below 300 metres
What is a gap?
An opening between two mountains or hills
What is a mountain?
Land that rises above 300 metres
What is a Valley?
A long depressions between hills or mountains
What is upland?
A wide area of land above 300 metres
What is a ridge?
A long narrow line of hills or mountains
What are the signs of a well drained area?
- settlement
* lots of roads
What are the signs of a badly drained area?
- no settlement close to rivers
- roads are built away from rivers
- river meandering through the low lands
Why is don’t many people live in mountains?
- it is difficult and costly to build roads in the mountains so there are not many roads so it is not acsessible
- it is very difficult to build houses up mountains because of the altitude
What are the factors that influence rural settlement?
- altitude
- slope
- drainage
- shelter
- aspect
How does shelter influence rural settlement?
There is settlement in sheltered valleys because they are warmer
What is aspect?
This is the direction the slope is facing
How does aspect influence settlement?
There is more settlement on south facing slops than there are on north facing slopes because south facing slopes are warmer because they get more sun