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18-Week Assessment

Science 18-Week Assessment Review over chapters 6,10,12,13

*Chapter 6* *Rocks*
What kind of rock forms when magma or lava cools? (Examples: granite, basalt, obsidian, and pumice.) Igneous Rock
An igneous rock with large crystals most likely would have cooled... ...slowly, below ground. (Example: granite)
A conglomerate is a what type of sedimentary rock? Clastic Rock (Which means is formed from smaller (rounded) rock pieces cemented together. An example is puddingstone.)
What kind of rocks form when other types of rocks are subjected to intense heat and pressure. (Examples: marble and slate) Metamorphic Rock
____________________ is a change in the texture, structure, or chemical composition of a rock due to temp. and pressure over a large area. Regional Metamorphism
Name some sedimentary rock s that are well sorted: sandstone, shale
This sedimentary rock often contains fossils, and forms from the remains of marine organisms. What is limestone?
Metamorphic rock that is... has been exposed to tremendous pressure at tectonic plate boundaries, which causes its minerals to form layers or bands. ...foilated...
*Chapter 10* *Plate Tectonics*
The __________ is made up of the crust and rigid upper mantle. (It's what the tectonic plates are made out of.) lithosphere
Name three pieces of evidence used to support Wegener's hypothesis of continental drift. -fossils from the Mesosaurus, tropic plants (Africa, S. America Antarctica) - rock formations that matched up -changes in climatic patterns
You would find a subduction zone at which type of plate boundary? You would find a subduction at a -convergent- boundary.
This is the ocean the Ring of Fire- a chain of active volcanoes and earthquakes- is located around. What is the Pacific Ocean?
The country of _______ sits atop a divergent or transform plate boundary? -Iceland-; divergent boundary
True or False: Sediment is thicker closer to the center of a mid-ocean ridge. False
* Chapter 12* *Earthquakes*
What is the sudden return of a deformed rock back to its undeformed shape? Elastic rebound it is.
Is the epicenter or the focus the location on a fault where the first motion of an earthquake begins? the focus
Earthquakes with ____________ usually cause the most damage. shallow focus
This is caused by an earthquake whose epicenter is on the ocean floor. A tsunami.
The measure of 1.________ of an earthquake is called 2._________, and is measured on the 3._____________. 1. strength 2. magnitude 3. Richter scale
Define seismograph A seismograph is an instrument used to record seismic waves.
The measure of how much damage an earthquake causes is called _________. (1) What is it measured on? (2) 1. intensity 2. It is measured on the Modified-Mercalli Scale.
*Chapter 13* *Volcanoes*
What is the type of lava that flows easily and cools with ropy appearance? pahoehoe
The bits and pieces of rock and ash that are ejected from a volcano during an explosive eruption. What is pyroclastic material?
Define Viscosity The resistance to flow of a fluid; the thickness or stickiness of a magma/lava.
Hawaiian Islands Type of volcano: shield Type of magma/lava: mafic Origin of magma: oceanic Viscosity: low Type of eruption: quiet
Mt. St. Helens Type of volcano: composite Type of magma/lava: felsic Origin of magma: continental Viscosity: high Type of eruption: explosive
The Hawaiian Islands formed from a hot spot on the ocean floor, unlike Japan, which is considered an __________. island arc
What type of lava is thicker than pahoehoe and cools with a rough texture? aa
Created by: ryleemcgahan
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