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Science Final xD

sevies SRB science final

What would you expect after an explosive eruption? Darkened Skies
A cinder cone volcano has... Steep Slopes
An extinct volcano will probably... never erupt again
Landforms that we call volcanoes are created by... repeated eruptions of lava
Where are volcanoes most likely to form? Along plate boundaries
What would you expect to see during a nonexplosive eruption? Huge lava flows
Molten rock deep underground often gathers in a... magma chamber
What type of lava flows like dripping wax? Pahoehoe Lava
Cool, stiff lava that forms jumpled heaps of sharp chunks near the vent is called... Blocky Lava
What type of pyroclastic material gets its name from a word that means "little stones"? Lapilli
The pyroclastic material that can reach the upper atmosphere and circle the Earth for years is... Volcanic Ash
What category of volcano is most likely to erupt in the near future? Actice Volcano
A tiltmeter measures... changes in a volcanoes slope
What is most likely to happen if the water content of magma is high? An explosion
A crack in Earth's crust is known as a... rift
Mount Rainier and Ount St. Helens ar... composite volcanoes
Molten rock is also known as... magama
Magma that flows on the Earth's surface is... lava
Dust-sized particles of hardened lava are... vents
Magma that is blasted into the air and hardens is... pyroclastic material
A landform caused by reapeated eruptions of lava is volcano
What is the thin and solid outermost layer of the Earth above the mantle? crust
What is the thin layer of rock between the Earth's crust and core? mantle
What is the central part of the Earth below the mantle? core
What is the solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle? lithosphere
What is the soft layer of the mantle on which the tectonic plates move? asthenosphere
What is the strong, lower part of the mantle between the asthenosphere and the outerer core? mesosphere
What is a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle? tectonic plate
What is the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations? continental drift
What is the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies? sea-floor spreading
What is the theory that explains how large piecesof the Earth's outermost layer, called tectonic plates, move and change shape? plate tectonics
What is the boundary formed by the collision of two lithospheric plates? convergent boundary
What is the boundary between two tectonic plates that are moving away from each other? divergent boundary
What is the boundary between tectonic plates that are sliding past each other horizontally? transform boundaries
Stress that occurs when forces act to sqeeze an object are... compression
Stress that occurs when forces act to stretch an object are... tension
The bending of rock layers due to stress are... folding
A break in a body of rock along which one block slides relative to another is called a... fault
The rising of regions of the Earth's crust to higher elevations is called... uplift
The sinking of regions of the Earth's crust to lower elevations is called... subsidence
The study of earthquakes is called... seismology
The beding, tilting and breaking of the Earth's crust is called... deformation
The sudden return of elastically deformed rock to its undeformed shape is called... elastic rebound
A wave of energy that travels through the Earth, away from an earthquake in all directions is... seismic wave
A seismic wave that causes particles of rock to move in a back-and-forth direction is... P wave
A seismic wave that causes particles of rock to move in a sis-to-side direction is... S wave
An instrument that records vibrations in the ground and determines the location and strength of an earthquake... seismograph
A tracing of earthquake motion that is created by a seismograph is... seismogram
The point on Earth's surface directly above an earthquake's starting point, or focus is... epicenter
The point along a fault at which the first motion of an earthquake is the... focus
A hypothesis that is based on the idea that a major earthquake is more likely to occur along the part of an active fault where no earthquakes have occured for a certain period of time is the... gap hypothesis
Created by: annaz26