EOYE Y8 exam Flashcards
Define urbanisation
An increase in proportion of people living in towns and cities
Rural
An area that is mainly in the countryside with settlements such as towns, villages or hamlets
Urban
Town or city
Developed countries
Richer more stable country where people have higher living standards
Developing countries
Less stable countries where people may have lower living standards
What is a megacity
A city in which the the population is of 10M or more people
Where is the prime meridian
The vertical line from 0ยบ N to 0ยบ S
Where is the Tropic of Cancer
The line that is 20ยบ and a bit above the equator
Where is the Tropic of Capricorn
The line that is 20ยบ and a bit below the equator
How do we find a co ordinate on the world map?
First see how far N or S it is from equator and write it down, then see how Far E or W it is for the prime meridian and write that down. Latitude ( horizontal) then longitude (vertical)
northern hemisphere isโฆ
The half of the earth that is N of the equator
Southern Hemisphere isโฆ
The half of the earth that is south of the equator
Eastern hemisphere isโฆ
The half of the earth that is to the right of the prime meridian
The Western Hemisphere is..
The half of the earth that is left of the prime meridian
How to find the 4 fig grid reference
First find the northing then the easting to locate the bottom left corner of the box then shade the entire box In
What are the parts of the 16 point compass
N, NNE, NE, ENE, E, ESE, SSE, SE, S, SSW, SW,SWW,W, WNW, NW, NNW
What is a shanty town?
An area of low quality housing in developing or emerging countries.
Push factors
Factors that drive people away from a place
Pull factors
Factors that attract people to a place
Obstacles
Factors that make it harder for someone to undergo migration
What is rural to urban migration
When people move from rural areas to urban areas such as towns or cities
What is raster data
Data shown as pixels used to construct the background map
What is vector data
Data made of points which can be joined to form lines
What are the 5 components of GIS
1.Hardware ( the device used to view)
2. Methods ( how it was collected )
3. Map (map of a place)
4. People (people trained to operate the software)
5. Software ( programme used )
What are push factors of shanty towns?
- Unsanitary as most shanty towns donโt have plumbing so raw sewage is near the streets
- No social services such as fire brigade, police, schools or hospitals
- Unsafe as some towns may be controlled by drug gangs and are no-goโs for the police
What are the pull factors of shanty towns?
- The government offer ppl living in shanty towns the opportunity to IMPROVE their own living conditions
- Government provide land where WATER, SEWAGE AND ELECTRICITY are available
- BIG, WEALTHY CITY which is crowded and busy, would receive HIGHER WAGES if you had a job in the city
List the units of geologic time, longest to shortest
Eon
Era
Period
Epoch
What is our current:
Eon
Era
Period
Epoch
Phanerozoic
Cenozoic
Quaternary
Holocene
Is the Anthropocene an official new epoch?
NO
What is the Anthropocene?
A geological marker in Earthโs history where humans have become such a dominant force that they have changed the planetโs characteristics
Name 2 possible theories that could back up the Anthropocene
Colombian Exchange
Atomic Weapons Testing
What is the Colombian Exchange?
After the discovery of the Americas, โOld Worldโ and โNew Worldโ crops (eg. Maize) were exchanged between Europe and Americaโs. This:
Permanently changed global pollen records
Brought over diseases that practically wiped out indigenous Americans and turned abandoned farms into big forests (CO2 sinks) resulting in global drop in CO2 and global cooling for 200 yrs
What is the atomic weapons testing theory?
Post WW2: many countries develop nuclear weapons, resulting in increased radioactive material rising to atmosphere, spreading all over world and settling back down again, accumulating in sediment, bone and tissue. Partial ban in nuclear weapons testing in early 1960s resulting in โgolden spikeโ in 1964. Criticism: not a big change to Earth tho
Meaning: anthropogenic climate change?
Man made climate change - BAD
What is the % of carbon dioxide emissions?
75%
What is the percentage of fluroro- gasses Emmissions?
2%
What is the % of methane emissions?
17%
What is the % of nitrous oxide Emissions?
6%
Relative Strength of co2
1
Relative strength of fluorogases
10000
Relative strength of methane
30
Relative strength of nitrous oxide
600
Where does CO2 come from?
Burning fossil fuels to generate electricity
Where does fluoro-gas come from?
Man made gas used in aerosol cans and fridges
Where does methane come from?
Agriculture, melting permafrost (PFL)
Where does nitrous oxide come from?
Agriculture, burning fossil fuels
Countries with the most greenhouse gas emissions
China = 32%
USA = 13%
India = 7%
Russia = 5%
Japan = 3%