Sedimentary
Sedimentary rock is formed over many __________.
years
What 2 things are needed to form a metamorphic rock?
heat, pressure
Igneous rocks are formed when liquid rock does what?
cools
True or False; Most crystals are transparent and clear.
False
The outermost layer of our planet is called the __________.
crust
Sedimentary rock is made of little pieces of what?
sediment
What are metamorphic rocks made from?
other rocks
When liquid rock is underground, we call it _________.
magma
Name a type of crystal found in the kitchen.
salt, sugar
The layer of our planet under the crust is called ___________.
Mantle
Sediment that forms sedimentary rock collects at the bottom of ____________.
bodies of water (oceans, seas, lakes)
A type of metamorphic rock that is formed when pressure rearranges the minerals in a rock into __________.
layers
When liquid rock comes out of a volcano, we call it __________.
lava
Crystals can grow from a ________, _________ or a ___________.
solid, liquid or gas
The layer in the center of the earth is called ____________.
inner core
____________ in the water or minerals act like glue to stick the sediment in sedimentary rocks together.
chemicals
metamorphic rocks are rocks that go through a ___________ or ___________ change.
physical, chemical
An igneous rock formed inside the earth is called a _________ igneous rock.
intrusive
What is one factor that affects the growth of crystals?
space, temperature, chemical conditions, pressure
The layer of the earth that surrounds the inner core is called ___________.
outer core
When a living thing gets pressed into sedimentary rock, they turn into __________.
fossils
One of the hardest metamorphic rocks is ____________.
quartzite (quartz)
An igneous rock formed outside a volcano is called a __________ igneous rock.
extrusive
The shape of crystals is called its ___________.
habit
Which layer of the earth is magnetic?
outer core