Classifying Rocks
Geologists classify rocks into 3 major groups
What is igneous, sedimentary, and metamorphic
Igneous rock are made from ________.
lava or magma
These small pieces or particles make up sedimentary rock. They can be other rocks or plant and animal organisms
What is sediments
This is how metamorphic rocks are created.
What is extreme heat and pressure
The type of rock that forms from magma or lava cooling
What is igneous rock
There are two types of igneous rocks:
extrusive and intrusive igneous rock
Sedimentary rocks usually have
layers
These types of rocks can become metamorphic rocks
igneous, sedimentary and other metamorphic rocks
The small units that make up a rock and its texture are called __________.
What is grains
Magma or Lava is Inside the Volcano?
Magma
Name an example of sedimentary rock
sandstone, limestone, shale etc.
Metamorphic rocks can usually have
crystals
Geologists study the ________ & ________ of a rock in order to identify it.
What is texture and composition
lava
Which rock do we find fossils in?
sedimentary
True or false: Metamorphic rocks have layers
true
Igneous rock cools very quickly.When it forms the rock could be described as _________.
What is smooth or shiny or no visible crystals
True or false: igneous rocks can have crystals?
true
Sedimentary rocks are usually made of
clay or sand or mud
What does metamorphic mean?
What is "to change form"?