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classifying rocks
igneous rocks
sedimentary rocks
100
when studying a rock sample,geologist observe the rock's mineral composition,color,and texture.
what do geologist observe when studying a rock sample?
100
igneous rocks are classified according to their origin, texture, and mineral composition.
what are igneous rocks classified according to?
100
sedimentary rock are formed when pieces of rocks are pressed and cemented.
how are sedimentary rocks formed?
200
to describe a rocks texture, geologists used terms based on the size, shape,and patterns of the grains.
to describe a rocks texture, geologists use terms based on the ..........., ............. ,and ............. of the grains.
200
the name igneous comes from the Latin word ''ignis'',meaning fire.
the name igneous comes from?
200
erosion,deposition,compaction,and cementation.
name the series of processes that most sedimentary rocks are formed through?
300
igneous rock forms when magma or lava cools and hardens.
how are igneous rocks formed?
300
the three major groups of sedimentary rocks are, clastic rock, organic rocks,and chemical rocks.
What are the three major groups of sedimentary rocks?
400
rock formed from lava that erupted onto earths surface.
What is extrusive rock?
400
because both types of stone are soft and can easily be cut into blocks or slabs.
why have sedimentary rocks such as sandstone & limestone have been used as building material for thousands of years.
500
the most common extrusive rock is basalt.
What is the most common extrusive rock?