Earth Science: Geology, the Environment, and the Universe, New York

Section 2: Types of Sedimentary Rocks


1.	Which of the following is an example of an evaporite? Need a Hint?
		A)	breccia
		B)	coal
		C)	rock salt
		D)	shale


2.	Sedimentary layers with distinct grain sizes progressing from larger to smaller are called __________. Need a Hint?
		A)	layered deposits
		B)	glacial deposits
		C)	graded beds
		D)	unsorted deposits


3.	What would happen to the pond in the figure if the freshwater inflow stream and path to the ocean disappeared? Need a Hint?
		A)	It would produce extrusive igneous rocks.
		B)	All life will stop living in the pond.
		C)	Water would come from somewhere else.
		D)	The entire lake would eventually evaporate away, leaving only evaporites.


4.	How are clastic rocks classified? Need a Hint?
		A)	method of depostion
		B)	particle size
		C)	mineralogy
		D)	metamorphic grade


5.	A __________ ranges in grain size from 2 mm to 0.062 mm. Need a Hint?
		A)	sand grain
		B)	silt grain
		C)	boulder
		D)	cobble


6.	Why are sedimentary rocks important? Need a Hint?
		A)	They provide many natural resources and evidence of Earth's past.
		B)	They provide building stones.
		C)	They contain fossils.
		D)	They contain gemstones of high value.


7.	The grains of a breccia most likely traveled __________ than the grains in a conglomerate.
		A)	a shorter distance
		B)	a farther distance
		C)	the same distance
		D)	a different distance