Planet Rock Flashcards
What are the layers of the earth
Crust, Mantle, Outer core and Inner core
What state of matter is the inner core
Solid
What is the inner core made of
Iron and nickel but mainly Iron
What is the outer core
Molten Metal
What is the Outer core made of
Iron and nickel but mainly Iron
What is the mantle made of
Molten rocks
What is lave
Magma that has erupted onto the surface
How do we know about the mantle
Through volcanoes and earthquakes
What is the crust made of
A thin layer of solid rocks
What can easily fracture the earth
Earthquakes
What are the three types of rocks
Igneous, metamorphic and sedimentary
How are sedimentary rocks formed
From compressing sediments
Examples of sediments
Shells, dead animals and small rock fragments
Examples of sedimentary rocks
Flint, chalk and sandstone
Where are metamorphic rocks formed
Under the Earths surface
How are metamorphic rocks formed
When heat and pressure acts on another rock
Examples of metamorphic rocks
Marble and slate
How are igneous rocks formed
When magma cools
An example of igneous rocks
Granite
What is the rock cycle
A natural but flow process of converting one rock type to another
What do large crystals indicate
Slow cooling
What is an example of large crystals
When magma cools under the surface
What do small crystals indicate
Fast cooling
What are some examples of metals which can be found in their natural state?
Gold and silver