Term
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Definition
| Faults are fractures in Earth where movement has occurred |
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Term
| An earthquake epicenter is ? |
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Definition
| The epicenter is the location on the surface directly above the focus |
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Term
| When an earthquake occurs energy radiates in all directions from its source which is called the ? |
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Definition
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Term
| Earthquakes are usually associated with ? |
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Definition
| Large fractures in earths crust and mantle called faults |
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Term
| What causes earthquakes ? |
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Definition
| Earthquakes occur due to the release of built up energy |
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Term
| Most earthquakes are produced by the rapid release of elastic energy stored in rock subjected to great forces ? |
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Definition
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Term
| During an earthquake the ground surface |
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Definition
| Can move in any direction |
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Term
| The adjustments of materials that follow a major earthquake often generate smaller earthquakes called |
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Definition
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Term
| Major earthquakes are sometimes preceded by smaller earthquakes called |
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Definition
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Term
| The slow continuous movement that occurs along what fault ? |
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Definition
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Term
| Which seismic waves travel most rapidly ? |
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Definition
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Term
| What is true about p waves ? |
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Definition
| They compress and expand rocks in the direction the waves travel |
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Term
| Overall which seismic waves are the most destructive? |
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Definition
| The surface waves are because surface waves move in an up down side to side motion |
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Term
| What is the minimum number of seismic stations that is needed to determine the location of an earthquakes epicenter ? |
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Definition
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Term
| What instrument records earthquake waves? |
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Definition
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Term
| How much of an increase in wave amplitude is seen from an earthquake measuring 5.4 on the Richter scale compared to one measuring 4.4 ? |
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Definition
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Term
| A succession of ocean waves set in motion by a submarine earthquake is called an ? |
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Definition
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Term
| In areas where unconsolidated sediments are saturated with water,earthquakes can turn stable soil into fluid through a process called ? |
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Definition
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Term
| Violent shaking from an earthquake can cause soil and rock on slopes to fail and cause a ? |
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Definition
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Term
| Why do earthquakes often cause damaging fires ? |
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Definition
| The fires started when gas and electrical lines were cut |
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Term
| Long range earthquake forecast are based on the idea that earthquakes are ? |
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Definition
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Term
| What layers of earth make up the lithosphere ? |
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Definition
| Crust and uppermost mantle |
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Term
| Through which Earth layer are S waves NOT transmitted ? |
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Definition
| outer core because it is liquid |
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Term
| Earths core is made of an alloy of ? |
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Definition
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Term
| Wegners continental drift hypothesis stated that all continents once joined together to form ? |
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Definition
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Term
| The supercontinent in the continental drift hypothesis is called ? |
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Definition
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Term
| In the plate tectonics theory the lithosphere is divided into |
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Definition
| plates and plates can be made up of both continental and oceanic lithosphere |
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Term
| A tectonic plate consists of |
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Definition
| crust and uppermost mantle |
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Term
| A divergent boundary at two oceanic plates can result in a ? |
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Definition
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Term
| What type of boundary occurs where two plates move together,causing one plate to descend into the mantle beneath the other plate ? |
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Definition
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Term
| Give an example of a transform boundary ? |
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Definition
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Term
| What occurs when divergence occurs between two oceanic plates ? |
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Definition
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Term
| The Himalayas in south asia are an example of what type of plate boundary ? |
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Definition
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Term
| Volcanic island arcs are associated with what type of plate boundary ? |
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Definition
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Term
| Which of the following affects the amount of destruction caused by earthquake vibrations ? |
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Definition
| The design of the structure,the intensity and duration of the vibrations,the nature of the materials on which structures are built |
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Term
| What hypothesis states that the continents were once joined to form a single continent ? |
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Definition
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Term
| One kind of evidence that supports Wegener's hypothesis is that ? |
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Definition
| Fossils of the same organisms have been found on different continents |
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Term
| How did opponents of continental drift account for the existence of similar fossils on widely separated ? |
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Definition
| Migration across land bridges |
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Term
| Which of the following statements correctly describes the asthenosphere ? |
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Definition
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Term
| In the plate tectonics theory the lithosphere is divided into ? |
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Definition
| 7 major plates and many smaller plates |
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Term
| A tectonic plate consists of ? |
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Definition
| crust and uppermost mantle |
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Term
| In the plate tectonic theory a plate can be made up of ? |
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Definition
| both continental and oceanic lithosphere |
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Term
| A divergent boundary at two oceanic plates can result in a ? |
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Definition
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Term
| What type of boundary occurs where two plates move together causing one plate to descend into the mantle beneath the other plate ? |
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Definition
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Term
| Which of the following is a geographic example of a transform fault boundary ? |
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Definition
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Term
| New ocean crust is formed at ? |
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Definition
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Term
| Which of the following results when divergence occurs between two oceanic plates ? |
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Definition
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Term
| The Himalayas in South Asia are an example of what type of plate boundary ? |
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Definition
| Convergent continental-continental boundary |
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Term
| Volcanic island arcs are associated with what type of plate boundary ? |
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Definition
| convergent oceanic-oceanic boundary |
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