Chapter 4 Flashcards
Define geology
The study of earths physical structures and forces that created them.
Give two characteristics of the inner core
Solid and 780 miles thick
List the four earth zones
Core, inner core, outer core, crust
About how many large plates does the earth have?
Seven or eight
Those plates move on the
Across the upper mantle
What are the three things that can happen on the edges of the plates?
Melt, Bend, and break
What was the supercontinent called?
Pangeu
What are the smaller continents that it broke into called
Gond wound and Louisiana
Name the three types of plate tectonics
Divergent, convergent, subduction
Give three characteristics of when plates move apart
40,000 miles long, volcanic mountains, worlds highest peaks
On land we call these areas
abyssal plains
Define abyssal plains
Away from the oceanic ridges the ocean for sinks due to the lack of support
What are two landform features that can be created when there is a subduction?
Volcanoes and trenches
What is likely to happen when plates slide past each other?
Earthquakes
What to process his cause weathering?
Breaking down and decaying of rocks
Define erosion
The movement of surface area from one place to another
Name the three natural processes that erode material
Water, wind, and ice
Why are two affects of glaciers?
Erode. rock and remove sediment
Shapes on the land can be built by what three processes?
Techtonic, erosion, sediment deposits
How much of the earths water is usable for humans?
3%
Explain how water moves through the hydrological cycle
The movement of water through the hydrosphere
What is the largest watershed in the US?
Mississippi river
Name three ways lakes can be made
Glaciers, continental shift, volcanoes
Define tributary
Small rivers that flow into bigger rivers
Give three examples of wetlands
Swamps, bottom land, marches
Name to aquifers in the mid west
Oyala, maromet
