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Geography Grade 11 > Mapwork > Flashcards

Mapwork Flashcards

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1
Q

What’s the formula for working out degrees/minutes/seconds?

A

(Cm of co-ord/total cm in 1’ or 1degree) x 60

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2
Q

What are signs that show the direction the river flows? (5)

A

Towards the sea
From higher altitude to lower altitude
Contours bend upstream
Dam wall is downstream
Tributaries join at an acute angle where they meet the river

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3
Q

What’s the formula for distance?

A

Map distance x scale / 100 000

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4
Q

What’s the formula for area?

A

Length x breadth

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5
Q

What’s the formula for gradient?

A

VI/HE
(Difference in height) / (Distance)

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6
Q

How should gradient always be represented?

A

As a ratio
No units needed

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7
Q

How do you work out magnetic bearing?

A

Geographic bearing + magnetic declination

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8
Q

What’s the formula for vertical exaggeration?

A

VS/HS
(Vertical scale/horizontal scale)

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9
Q

What are ways to prove seasonal rainfall?

A

Many dams
Furrows
Many non-perennial rivers
Wind pump
Reservoirs

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10
Q

What’s are reasons for cultivation of rows of trees? (3)

A

Wind breaks
Reduces soil erosion
Aesthetic

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11
Q

What’s the shape of rural settlements?

A

Linear

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12
Q

What are the street patterns? (3)

A

Radial concentric
Grid iron
Planned irregular

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13
Q

What are advantages of grid iron?

A

Easy to layout and subdivide
Easy to navigate
Oldest part of town

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14
Q

What’s a disadvantage of grid iron?

A

Causes traffic congestion because of all the intersections

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15
Q

How to prove farming is commercial?

A

Large area
Farm names
Dams
Irrigation
Farm boundaries

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16
Q

Identify dominant primary activity

A

Power supply
Mining
Farming

17
Q

What are some examples of recreational activities?

A

Rifle range
Hiking
Picnics
Wine tasting
Fishing

18
Q

What’s the definition of GIS?

A

A computer application that is used to store, view and analyse geographical information, especially maps.

19
Q

What are sources of information of GIS?

A

Statistics
Topographical maps
Aerial photographs
GPS
Satellite images
Surveys
Reports

20
Q

What are the components of GIS?

A

Hardware
Software
Data
People
Methods

21
Q

What are some uses of GIS?

A

Produces maps for display and can show many different kinds of data on one map such as streets, buildings and vegetation.
Users can select information from layers of data
You can have as many layers as you have data layers

22
Q

What are data layers

A

Map layers showing different types of information that are projected on top of one another.

23
Q

What are examples of uses of GIS?

A

Used by farmers to match crops to soils
Used by businesses to plan the opening of new branches
The best locations for building schools

24
Q

What are some examples of application of gis?

A

Infrastructure-the best area to build
Newspaper determine distribution areas
Retail companies find locations for new sites
Schools plan bus routes
Meteorologists- prepare weather forecasts
Disaster management - prepare for and manage natural disasters

25
Q

What is remote sensing?

A

The science of acquiring information about the earths surface from a distance without being in direct contact with it.

26
Q

What are some examples of remote sensing images?

A

Satellite images, aerial photographs, orthophotos

27
Q

How might shops make use of gis?

A

Available plots
Cost of plots
Distance to other shops
Client base
Client buying habits

28
Q

How would gis help flood

A

Relief (contours)
History
Rainfall figures
50 year flood line
Development above flood like
Residential areas affected
Evacuation routes

29
Q

How would gis be used toward crime

A

Type
Location
Time
Frequency
Risk zones

Geography Grade 11 (7 decks)

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