Geo Flashcards
What is a practice that involves clearing land for massive, commercial cattle farms?
Cattle farming
This practice often leads to deforestation and land use changes.
What is the primary purpose of logging?
Cutting down hardwood trees to sell
Logging can impact ecosystems and contribute to deforestation.
What is hydro-electric energy?
Energy created by building dams and reservoirs
An example includes the Belo Monte dam in Brazil.
What resources are typically extracted through mining?
Iron ore, aluminum, copper, tin, and gold
The Carajas Mine in Brazil is a notable example.
Why do logging companies, cattle ranches, farms, and mines need roads?
To reach them and transport products to the coast for export
Roads facilitate trade and access to resources.
What is urban growth?
Increasing population leading to expanding urban areas
For example, Manaus’ population grew 22% from 2000 to 2010.
What is subsistence farming?
Local farmers clear land and grow food only for their family to eat
This method often involves slash and burn techniques.
Fill in the blank: _______ is the process of clearing land for large-scale cattle operations.
Cattle farming
True or False: Hydro-electric energy is generated by burning fossil fuels.
False
Hydro-electric energy is generated through water flow, not fossil fuels.
What is one environmental consequence of logging?
Deforestation
Deforestation can lead to loss of biodiversity and habitat destruction.
Fill in the blank: The _______ Mine in Brazil is known for extracting iron ore.
Carajas
crust
outer layer of the earth
mantle
layer beneath the crust semi-liquid thick
outer core
layer beneath mantle liquid iron
tectonic plates
pieces of rock floating on the mantle which make up the crust
oceanic crust
crust found under ocean
continental crust
crust found under land
continental drift
earth’s continents are slowly drifting apart
slab pull theory
- Subduction: At a destructive plate boundary, a denser oceanic plate sinks beneath a less dense continental plate into the mantle.
- Gravity’s Role:The sinking plate (slab) is pulled further into the mantle by gravity.
- Pulling Effect: As the slab sinks, it pulls the rest of the plate with it, causing movement of tectonic plates.
what are convection currents
Heat from the Earth’s core causes magma in the mantle to rise, cool, and sink, creating convection currents.
constructive plate margin
2 plates move away from each other due to convection currents causing gentle volcanoes and earthquakes
conservative plate margins
2 plates move past each other due to convection currents no volcanoes caused but causes violent earthquakes
destructive plate margins
2 different types of plates move towards each other the denser plate is pushed below the lighter plate causing volcanoes and earthquakes
