geography U2

Geotechnology

is the use of advanced technology in the study of geography and in everyday use

Georeferencing

Is linking geographic data to a particular location

Types of geotechnology

1. Global Positioning System (GPS)

2. Geographic Information systems (GIS)

3. Remote Sensing

4. Telematics

Global Positioning System (GPS)

A satellite based system that provides location data. Provides exact location (appx 5ft) and movement data. Only shows the exact location of something

Geographic Information Systems (GIS)

Is a computer system that manages, analyzes and communicates geographic information. Uses layers to show different things on a map. (Driving route to destination) Analze different features at the same time on a map. Helps us see patterns/trends and find interrelationships

Remote sensing

The process of detecting and monitoring the physical characteristics of an area from a considerable distance using a satellite or an aircraft.

Telematics

The technology of monitoring vehicles by combining GPS sensors and wireless telecommunications to transmit real time data on location, driver behaviour and vechile health

Types of patterns

1. Dispersed

2. Concentrated

3. Clustered

4. Linear

5. Outlier

6. Absent

Graphs show….

Trends

Trends

Are observations made over a time period. A trend shows how these observations have changed

Types of trends

1. Increasing

2. Decreasing

3. Static

4. Fluctuating

5. Unpredictable

Satellite imagery can also show…

Trends

Pangaea

200 million years ago all of the present day continents combined to form a single supercontinent

Webber’s proof

1. Rocks that where the same age and type found on opposite sides of the ocean

2. Shape of the continents

3. Fossils that were the same on different continents

4. Paleo-Climate Data(glaciation)

Crust

Very thin, 1% of earth. Cold, hard, fragile rock

Mantle

Thickest layer of earth. Hot and molten rock

Outer core

Liquid Metal. Very dense. *the earths magnetic field comes from here

Inner core

Solid metal. Such high pressure that metals cannot move

Oceanic

Underneath the ocean

Continental

“land” above the ocean

how are plates moved

By a process called Convection Currents

Magma

Liquid molten rock found inside the earth

Lava

Liquid molten rock that is on the crust

Plate boundary

Exists between two plates

Types of boundaries

1. Divergent boundaries

2. Convergent boundaries

3. Transform boundaries

Divergent boundary

Two plates moving away from each other,

Ridge

As the oceanic plates pull apart, liquid molten rock fills the gap, comes in contact with the cold water and immediately hardens and becomes new rock

Rift Valley

When plates pull apart on land the gap is called a rift valley

Convergent Boundary

Two plates coming together