rocks and their uses Flashcards
What is the crust layer of the earth?
The crust is the outer layer of the earth.
What is the mantle?
The mantle is one of the layers of the earth that is mainly solid rock.
What is the core?
The core is divided into two parts.
How many types of rocks are there on earth, and what are they?
There are 3 types of rocks on the earth and they are igneous, metamorphic and sedimentary.
What is the rock cycle?
The rock cycle is when rock types are changing between the three rock types over millions of years.
What is the structure of the earth?
The structure of the earth is made of three layers: igneous, metamorphic and sedimentary.
What is an atom?
Atom is made of protons, neutrons and electrons.
What is the structure of the earth?
The structure of the earth is the crust, mantle, outer core, and inner core.
What is an igneous rock?
Igneous rock is one formed from the cooling of molten rock.
What is metamorphic?
A metamorphic rock is a rock formed from another rock under heat and pressure
What is sedimentary?
A sedimentary rock is a rock formed by small rock pieces being transported by rivers and laid down in layers.
How extrusive igneous rocks are formed?
Extrusive igneous rocks are formed by magma that has erupted onto the surface as lava and then cooled quickly.
What is an example of an extrusive igneous rock?
obsidian.
How intrusive igneous rocks formed?
Intrusive igneous rocks are formed by magma that has cooled slowly, deep underground.
What is an example of intrusive igneous rock?
Granite.
