Layers of the Earth
Name the layers of the Earth in order
Crust/ mantle/ outer core/ inner core
Name one example of sedimentary rock
Limestone/ sandstone/ shale
Name one example of metamorphic rock
marble/ slate
Name one example of igneous rock
Pumice stone/ obsidian/ granite/ basalt
This layer is liquid
Outer core
compacted sediments/ parallel layers/ break easily/ presence of fossils/ sandy texture
Name a characteristic of metamorphic rock
wavy layers/ irregular patterns/ crystals/
Name two characteristics of igneous rocks
bubbly texture/ glossy texture/ crystals present/ coarse grained texture
This layer contains minerals and metals used for manufacturing.
Crust
What is weathering?
Action of the wind, rain, snow break rocks into smaller fragments called sediments.
What do metamorphic and igneous rocks have that sedimentary rocks don't?
What's the difference between magma and lava?
Molten rock under the surface/ molten rock that erupted and is on the surface
This layer is made of semi solid rock.
What is compaction and cementation
Sediments form layers, eventually they become so heavy that they stick together forming the rock
Do metamorphic rocks have evidence of life?
No
Big crystals: slow cooling
small crystals: rapid cooling
This two metals in the inner core make up the Earth's magnetic field.
Iron/ nickel
How are sedimentary rocks formed?
Weathering and erosion/ sediments settle down in the ocean/ compaction and cementation
Explain how metamorphic rocks are formed
Two existing rocks exposed to heat and pressure make rocks change its form but not melt
Explain how igneous rocks are formed in full.
Intense heat melts rocks/ magma or lava/ cools down and solidifies