Structure Of Earth Flashcards
(23 cards)
How does density help us?
It can help us figure out the structure of earth
What can and cant pass through a rock?
Light cant
Shockwaves from earthquake can
What happens to shock waves when they pass through a rock?
They change speed and course as the rock changes
How does this tell us about the structure?
They probe the rock down into the interior and measure how long the waves take to get from the earthquake to the points of earth.
What are the layers of earth?
Crust Mantle Outer core Inner core Mohoplane
What is the largest hole and how deep and where?
Kola peninsula
12km
Ussa
What is the most common rock?
Granite
What makes up granite?
Silicon and aluminium
What rock is in ocean?
Basalt - made up of iron aluminum and silicon
What are periodites?
Make their way up to surface from mantle
What are meteorites and how many and explain?
Left over from meteor
Stony- mantle
Matalic- core
What is sima?
Oceanic crust rocks
What is sial?
Continental crust rocks
What are the 3 types of rock and how are they formed?
Igneous- liquid rock and magma
sedimetric- withered and decimposed
Metamorphic- igneous and sedimetric forced together by pressure and temperature
What is the origin, characteristics and examples of rocks?
Ignious - magma- basalt and granite
Sedimetric- compressed layers of particles - linestone and sandstone
Metamorphic- ignious and sedametric- ganise marble
Explain how rocks help each other
Igneous rock is pressured and given heat it becomes a metamorphic rock. When metamorphic is weathered and broken down it becomes soil. Same for sedimetary?
What is coal used for?
Electricity
What is limestone used fo?
Cement
What is shale used for?
Bricks and cement
What is basalt used for?
Minerals and aggregate
What is granite used for?
Construction
What is conglomerate used for?
Construction industry
What is the density of water and earth?
1 g/cm
5.5 g/cm
