Ch 17-20 Flashcards
Earthquakes have killed as much as ? A 4 million B 30 000 people C 400 D 53 000
B 30 000 people
Pg 512
Tsunamis are associated with? A. Oceans B. ground shake C. Volcanoes D. None of the above
A. Oceans. Page 513
The magma that forms composite volcanoes commonly contains large amounts of.. A magma B silica, water, and gases C carbon dioxide D none
B silica, water, and gases
Chapter 17 notes
The volcanoes associated with convergent plate boundaries from two major belts
A pacific ring of fire and Mediterranean belt
B pacific and coastal belt
C Mediterranean and coastal
D none
A pacific ring of fire and Mediterranean belt
Chapter 18-1 notes
A pyroclastic flow is a cloud of volcanic gas, dust, and other tephra
A true
B false
A true
Chapter 18-1 notes
Calderas are large depressions that can form when the summit or side of a \_\_\_ collapses into magma chamber A volcano B tsunami C fault D none
A volcano
Chapter 18-1 notes
The appearance of a volcano depends on two factors:
A magma, size
B the type of material that forms the volcano , the type of eruptions that occur
C eruptions, magma
D none
B the type of material that forms the volcano, the type of eruptions that occur
Chapter 18-1 notes
The three major types of volcanoes is ? A composite, cinder cone, shield volcanoes B composite , cinder cone, volcanoes C cinder cone, shield, magma D none
A cinder cone, shield, and composite
Chapter 18-1 notes
Most earthquakes occur when rocks? A form B shatter C fracture, break D none
C fracture, break
Chapter 19-1 notes
Reverse faults are fractures that form as a result of \_\_\_\_\_\_\_ compression. A sideways B horizontal C upside down D none
B horizontal
Chapter 19-1 notes
The vibrations of the ground during an earthquake are called? A sound waves B seismic waves C tidal waves D none
B seismic waves
Chapter 19-1 notes
Surface waves travel along earths surface moving in \_\_\_ directions. A three B four C two D none
C two
Chapter 19-1 notes
_____ is the study of earthquake waves
A seismology
B oceanography
C biology
D none
A seismology
Chapter 19-2 notes
_______ is the measurement of the amount of energy released during an earthquake
A biology
B magnitude
C earthquakes
D none
B magnitude
Chapter 19-3 notes
Earthquakes intensity depends primarily on the amplitude of the surface waves generated
A true
B false
A true
Chapter 19-3 notes
The \_\_\_\_\_\_ of the circle is equal to the epicentral distance A radius B outside of circle C half of the circle D none
A radius
Chapter 19-3 notes
Almost ___ percent of all earthquakes occur in the circum pacific belt
A 100
B 80
C 60
D 20
B 80 percent
Chapter 19-3 notes
\_\_\_\_\_\_ is the process cycle that forms all mountain ranges. A fault B orogeny C hills D none
B orogeny.
Chapter 20 notes
The _________ part of a convection current occurs where a sinking force pulls tectonic plates downward
A downward
B upward
C sideways
D none
A downward
Chapter 17-3 notes
Each region is characterized by \_\_\_\_\_\_ rocks that shows different degrees of deformation. A rocks B buildings C environment D none
A rocks
Chapter 20 notes
An island arc develops \_\_\_\_\_ of ancestral North America. A north B south C east D west
C east
Chapter 20 notes
The adirondack mountains in \_\_\_\_\_\_ \_\_\_\_\_ are tilted and are an example of a uplifted mountain A New York B Chicago C New Hampshire D Maryland
A New York
Chapter 20 notes
\_\_\_\_\_\_\_ measures water depth by measuring the time it takes for sound waves to travel from the device then back to receiver. A sonar B seismometers C magnitude D none
A sonar
Chapter 17-2 notes
\_\_\_\_\_\_ is the transfer of thermal energy but e movement of heated matter. A currents B convection C boundaries D none
B convection
Chapter 17-3 notes
Sheild volcanoes are by far the largest and cinder cones are the smallest.
A true
B false
A true
Chapter 18-1 notes
