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Earthquakes
Earthquakes

... • Earthquakes occur at each of the three types of plate boundaries: divergent, transform, and convergent – At divergent boundaries, tensional forces produce shallow-focus quakes on normal faults – At transform boundaries, shear forces produce shallow-focus quakes along strike-slip faults – At conver ...
Write about this….
Write about this….

... • Roaring forties – areas with many wild winds ...
Standing Waves - cloudfront.net
Standing Waves - cloudfront.net

... • This is almost exactly the same as the standing transverse wave. • The velocity is the velocity of sound in air. ...
Waves are “disturbances”
Waves are “disturbances”

... slows down more and more as it enters shallower water, so it can never actually “catch up” to the wave crest “in front” of it. Instead, it is always “catching up,” but never can quite do so. 3 The key thing to remember to avoid confusion is that the back part of a wave crest is “catching up” to the ...
Module 1: Earthquake Glossary
Module 1: Earthquake Glossary

... An elongated region where two plates are being pulled away from each other. New crust is formed as molten rock, then forced upward into the gap. Examples of spreading centers include the MidAtlantic Ridge and the East African Rift. ...
Brainpop - Tsunami
Brainpop - Tsunami

... a. the height of ocean waves b. the destructiveness of natural disasters c. underwater energy d. seismic activity _____ 8. Which of the following statements is an opinion about tsunamis? a. The 2004 tsunami caused millions of ...
Earthquakes
Earthquakes

... destroyed. Dams are seriously damaged. Large landslides occur. Water is thrown on the banks of canals, rivers, lakes. The ground cracks in large areas. Railroad tracks are bent slightly. XI. Most buildings collapse. Some bridges are destroyed. Large cracks appear in the ground.. Railroad tracks are ...
1 LAB 7: Earth Materials and Plate Tectonics
1 LAB 7: Earth Materials and Plate Tectonics

... P waves (also known as primary or compressional waves) are the first seismic waves to arrive at an earthquake recording (seismograph) station after an earthquake occurs. Primary waves behave much like sound waves, traveling through both solid and liquid layers of the Earth by compressing and stretch ...
Crust
Crust

... smaller ones ...
Chapter 8 and 18 - Mr. Green's Home Page
Chapter 8 and 18 - Mr. Green's Home Page

...  Studied rocks from volcanoes  Have studied rocks from the ocean floor – Silicon, oxygen, iron, magnesium  Density increases with depth  Because there’s more iron  Measured by speed of the seismic waves ...
Coasts – The essentials
Coasts – The essentials

... 2. The waves are mainly destructive - eroding the base of the cliffs (hydraulic action etc.) 3. Most of the material eroded from the cliffs is washed out to sea, the rest is moved by longshore drift - the beaches are therefore narrow and do little to protect the coastline. (If the beaches were wider ...
ppt - Discover Earth Science
ppt - Discover Earth Science

... energy is released from is called the focus • The point on the Earth’s surface that is directly above the focus is called the epicenter • When an earthquake occurs, energy waves are released and move outward from the focus ...
Chapter 8-Earthquakes Name
Chapter 8-Earthquakes Name

... a. Earthquakes are among the most powerful events on earth, and their results can be terrifying. A severe earthquake may release energy 10,000 times as great as that of the first atomic bomb. b. Rock movements during an earthquake can make rivers change their course. c. Earthquakes can trigger lands ...
Coastal processes - Bega Valley Shire Council
Coastal processes - Bega Valley Shire Council

... It is essential to appreciate that these processes do not operate in isolation, but interact with each other, often in quite complex ways. ...
Earthquake - SchoolNova
Earthquake - SchoolNova

...  Logarithmic scale (not linear).  Magnitude 2 or lower earthquakes cannot be felt by humans.  Magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth.  The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no ...
long earthquake`waves
long earthquake`waves

... So far as we know all major earth­ (juakes are associated with the rupturing or faulting of the rock in the crust or mantle. Except in the very strongest shocks the rupturing process takes but a few seconds and occurs along a fault line only 10 or 20 miles in length. The orig­ inal disturbance is li ...
seismic waves notes-0 - Fort Thomas Independent Schools
seismic waves notes-0 - Fort Thomas Independent Schools

... 5. Come together (convergence), spread apart (divergence) and move past (transform) ...
Ch. 11 Coastal Ocean - Seattle Central College
Ch. 11 Coastal Ocean - Seattle Central College

... formulas: D>Length/2 and D
File
File

... Answer: 3. What is the focus of an earthquake? Answer: 4. What is the epicenter of an earthquake? Answer: 5. Identify what type of wave the following diagram represents. How do you know? ...
Unit 4: Crustal Change
Unit 4: Crustal Change

... Earthquake: ( see text p.224-225) 1. Seismic Waves are recorded by a Seismograph (text p.222). 2. The seismic tracing is called a seismogram (text p.223) ...
Earth Science Regents Review
Earth Science Regents Review

... seismograph stations tell us? ...
Introduction to Earthquake Geophysics
Introduction to Earthquake Geophysics

... The geomagnetic field is generated by the motions of the iron in the outer core. This magnetic field allows us to use a compass to navigate around Earth's surface. The direction of circulation of the convection currents in the outer core has changed over geological time resulting in a swaping of mag ...
Mechanism of Earthquake and Damages of Structures
Mechanism of Earthquake and Damages of Structures

... Earth crust is made up of disjointed plates of irregular shape and size. Due to the movement of Earth these plates rub each other building up of strain in the rock. As a result strength gets accumulated and when it reaches the limiting value the rock fractures. The plane on which fracture takes plac ...
Chapter 5
Chapter 5

... but at different angles, attempting to orient the transect directly into the wind. Tracks 2a and 2b take a similar approach over Mt Aspiring. The Mt. Aspiring option would be chosen when the southern part of the South Island is experiencing stronger westerly and generating stronger waves than the ce ...
Earthquakes
Earthquakes

... • About 3 million occur each year (about one every 10 seconds) – but most are too small to be noticed ...
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Wind wave



In fluid dynamics, wind waves, or wind-generated waves, are surface waves that occur on the free surface of oceans, seas, lakes, rivers, and canals or even on small puddles and ponds. They result from the wind blowing over an area of fluid surface. Waves in the oceans can travel thousands of miles before reaching land. Wind waves range in size from small ripples, to waves over 100 ft (30 m) high.When directly generated and affected by local winds, a wind wave system is called a wind sea. After the wind ceases to blow, wind waves are called swells. More generally, a swell consists of wind-generated waves that are not significantly affected by the local wind at that time. They have been generated elsewhere or some time ago. Wind waves in the ocean are called ocean surface waves.Wind waves have a certain amount of randomness: subsequent waves differ in height, duration, and shape with limited predictability. They can be described as a stochastic process, in combination with the physics governing their generation, growth, propagation and decay—as well as governing the interdependence between flow quantities such as: the water surface movements, flow velocities and water pressure. The key statistics of wind waves (both seas and swells) in evolving sea states can be predicted with wind wave models.Although waves are usually considered in the water seas of Earth, the hydrocarbon seas of Titan may also have wind-driven waves.
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