earth science unit 2 study guide

Ace your homework & exams now with Quizwiz!

What is the P wave?

atrial depolarization

Where do earthquakes occur sometimes?

faults

Triangulation is a process to ____________ an earthquake

locate

give me the basic structure of a volcano

magma chamber central vent crater

what type of waves does a seismograph detect ?

p waves and S waves

Where do earthquakes occur?

plate boundaries

tentional stress

pulling apart, extension, stretching

name some benefits of a volcano.

Fertile soil geothermal energy and material construction

Which of the following represents the most powerful earthquake?

Great Chilean, 9.5

What drives mantle convection?

Heat in the deep mantle and core

What is a fold?

rocks bent into curves. typically formed at great depths.

Mercalli intensity scale

scale of earthquake intensity based on what people feel and the extent of damage caused by the earthquake

Shear

to cut

True or False The farther apart the P and S waves are on a seismogram, the farther away is the epicenter of an earthquake.

true

What is a fault?

A break in the earth's crust

What is an S wave?

secondary wave

What is an epicenter?

the point on Earth's surface directly above the focus

Earthquakes can cause

tsunamis and other natural disasters

A seismograph records an earthquake, but scientists do not feel it. The earthquake has a magnitude _____.

< 2.0

Seismograph

A device that records ground movements caused by seismic waves as they move through Earth

Richter scale

A scale that rates an earthquake's magnitude based on the size of its seismic waves.

Mercalli scale

A scale that rates earthquakes according to their intensity and how much damage they cause at a particular place

moment magnitude scale

A scale that rates earthquakes by estimating the total energy released by an earthquake

plate tectonics

A theory stating that the earth's surface is broken into plates that move.

strike-slip fault

A type of fault in which rocks on either side move past each other sideways with little up or down motion.

normal fault

A type of fault where the hanging wall slides downward; caused by tension in the crust

Can scientist predict when an earthquake will occur ?

No

Name the different types of folds ?

SYncline anticline monocline dome and basin

reverse fault

a type of fault where the hanging wall slides upward; caused by compression in the crust

After an earthquake, additional adjustments can occur along the fault. These adjustments can cause damaging vibrations called _____.

aftershocks

Where does most seismic activity occur?

along tectonic plate boundaries

Tectonic plate movement is created by _____ in the underlying mantle.

convection

The area where rock layers first move along a fault is the _____ of an earthquake.

focus

Earthquakes are the cause of other natural disasters, such as _____.

landslides, tsunamis, and liquefaction

which volcano can produce balsamic magma

shield

Richeter Scale

shows the strength of an earthquake

compressional stress

squeezes a rock and shortens a rock body

can scientist predict when a volcano will erupt ?

yes


Related study sets

BUSM 4100 FInal - Project Management

View Set

Computer Concepts Modules 4-5 Test

View Set

Bioquímica parcial 1 - estructura de las proteínas

View Set