Earth Layers
The rigid outer part of Earth
Lithosphere
Type of rock that forms from cooling magma
Igneous Rock
One example that shows Earth has changed over time
fossils
Different types of rocks
Event caused by the movement of Earth's crustal plates
Earthquakes
Effect of building dams
changes the natural flow of water
Layer of Earth that contains convection currents that move tectonic plates
Mantle
Process that changes igneous rock into metamorphic rock
heat and pressure
Supports the idea that continents were once connected
Identical fossils found on different continents
three main plates boundaries
Divergent, convergent, and transform boundaries
Impact on the environment as a result from deforestation
increased erosion
The densest layer of Earth
Inner Core
Sedimentary rocks often contains
fossils
Theory that states that the oldest rocks are found beneath new rock
The Law of Superposition
Role of subduction in plate tectonics
recycles crust into the mantle
creates mountains and volcanoes
Describe how urbanization affects air and water quality
pollution introduces harmful substances
replace natural filtration with rapid runoff
elevates temperature in cities
destroys habitats and alters environment
Describe the outer core
metal and liquid
when sediments are compacted and cemented together
Sedimentary rocks form
Fossils of fish found in layers at the tops of mountains
When oceanic plates and Continental plates collide, this happens
The oceanic plate subducts under the continental plate
Long term effects of desertification on land and human populations
crop failure due to poor soil quality
loss of forest- wood shortage
soil erosion
increase dust
water and air pollution
Name the five layers of Earth
Lithosphere, Asthenosphere, Mantle, Outer Core, Inner Core
Difference between erosion and deposition
Erosion is when materials are moved by wind or water.
Deposition is when those sediments are deposited in a different location
Mountain formation provides evidence of plate movement over time support the theory of _____________.
supports the theory of geological change
Most geologists think that the movement of Earth's plates is caused by this.
the convection currents in the mantle
a body of rock or sediment that can store a lot of water underground
An aquifer