Rocks
What person who studies rocks and minerals?
geologist
cloudy, some light gets through
translucent
These rocks have been changed from heat and pressure
Metamorphic Rock
What is the middle layer of the earth?
magma
Sometimes igneous or sedimentary rocks get pushed down underground when...
2 tectonic plates collide
made up of one or more minerals
rocks
the shine of a mineral or how it reflects light
luster
These rocks form when small pieces of rock are pressed together over time.
Sedimentary Rock
What is the melted rock that comes above ground?
lava
When igneous or sedimentary rocks get pushed down underground, the rocks will experiences so much what?
no lights get through
opaque
clear, can see through
transparent
These rocks are form when molten lava (magma) cools and turns to solid rock.
Igneous Rock
What is the outer layer of the Earth?
crust
Tectonic plate movements can also make rocks...
melt
color left by a mineral when rubbed on another surface
streak color
mineral's resistance to scratching
hardness
What is the middle layer of the Earth?
mantle
After the rock gets pushed into a pool of magma where it melts, it then will
cool underground or erupt out of a volcano
nonliving solid matter from the earth that hast the same chemical makeup and cystal shape
minerals
What is the center part of the Earth? (shaped like a ball) (inner and outer)
core
The rock cycle has been going since the Earth was formed over
4 billion years ago.