Minerals
Geologic Time
Plate Boundaries
Earthquakes
Volcanoes
100
Light that is reflected from a mineral's surface
What is luster? #4
100
The numeric age of an object is called
What is absolute age #8
100
What is the crack in the ocean floor through which magma rises?
What is a rift #19
100
Where the first motion of an earthquake occurs
What is the focus #42,48
100
An area of volcanic activity far from a tectonic plate boundary
What is a hot spot #64
200
Because many minerals are similar in color and certain elements may change the color, color
Is not a good identifier. #1
200
The age of an object in relation to the ages of other objects is
What is relative age #6
200
The theory that explains why and HOW continents move is called
What is plate tectonics. #27
200
The fastest moving body waves
What is P wave #34
200
A large depression formed by the collapse of a volcanic cone
What is a caldera #60
300
The color of a mineral in powdered form is called the mineral’s
What is streak #3
300
Almost all fossils are discovered in
What is sedimentary rock #9
300
Where do deep-ocean trenches form?
What is at convergent boundaries #32
300
This scale more accurately measures the magnitude of large earthquakes
What is moment magnitude scale #35
300
These form when oceanic lithosphere subducts beneath oceanic lithosphere
What is an island arc. #52
400
What are criteria for determining whether or not a substance is a mineral?
What is it is inorganic it occurs naturally it has a consistent chemical composition #2
400
A geologic period is usually named for
What is the place where its characteristic fossils were first discovered. #15
400
What occurs at a transform boundary?
What is two plates slide past each other horizontally. #33
400
By comparing arrival times of P waves and S waves at several seismograph stations scientists are looking for this
What is the epicenter #43
400
Volcanic eruptions may be signaled by
What is a change in earthquake activity. #59
500
Cleavage is the tendency of a mineral to
What is split along specific planes, forming flat surfaces. #5
500
On a geologic column, the oldest rocks
What is on the bottom #17
500
Wegener’s hypothesis of continental drift was finally confirmed by
What is evidence supporting the idea of sea-floor spreading. #21
500
Earthquakes usually occur at plate boundaries because
What is rock in environments near tectonic plate boundaries experience great stress. #44
500
The three major volcano types
What is cinder cone, shield, and composite #62
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