How many layers are there in the atmosphere
4
What is the atmosphere
the layer of gases surrounding us
Until what time frame did people mostly live in rural areas?
1850
What is ozone?
Three oxygen molecules
What is the ozone layer?
layer in the stratosphere that protects us from harmful rays
troposphere
stratosphere
mesosphere
thermosphere
If an area is not considered rural it is considered?
urban
What is virgin forest?
a forest that has never been cut
What is a Pacific Decadal Oscillation?
•Long term (20-30 years) change in the location of warm and cold water masses in the Pacific Ocean.
How long does a Pacific Decadel Ocillation last?
20-30 years
Give some examples of rural land
Farmland
Rangeland
Forest land
National and state parks
Wilderness
How can building a mass transit system improve living standards in an urban area?
decrease pollution
•An El Nino is a short – term (6-18 months), periodic change in the location of warm and cold water masses in the Pacific Ocean.
•During La Nina, the water in the eastern Pacific Ocean is cooler than usual
Causes the opposite conditions as an El Nino
geographic – information system (GIS) – computerized system for storing, manipulating, and viewing geographic data.
What are Tree farms?
Tree farms – areas where trees are planted in rows and harvested like other crops
land thta is poor to build buildings on
What is urban sprawl?
Rapid expansion of a city into the countryside around the city is called urban sprawl
Higher latitudes are closer to what?
closer to the poles
Cities both generate and trap more heat
Roads and buildings absorb more heat than vegetation does. They also retain heat longer.
The increased temperature in a city is called a heat island.
Atlanta, Georgia is an example that has a significant heat island
what is a Native forest?
Native forest – forest that is planted and managed
0
What is deforestation?
Cutting down trees completely
What is latitude
•The distance from the equator measured in degrees north or south of the equator is called latitude
a piece of land; 100 acres
Clear cutting – the process of removing all of the trees from an area of land; can destroy established wildlife habitat and may cause soil erosion