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Term | Definition |
---|---|
Earthquakes | Movements of the ground that occurs when rocks inside Earth pass their elastic limit, break suddenly, and experience elastic rebound. |
Fault | Fracture that occurs when rocks break and that result in relative movement of opposing sides; can form as a result of compression, being pulled apart, or shear |
Seismic Waves | Earthquake waves, including primary waves, secondary waces, and surface waves. |
Focus | Point deep inside Earth where energy is, realeased, causing an earthquake |
Epicenter | Point on Earths surface directly above an earthquakes focus |
Seismograph | Instument used to record seismic waves |
Magnitude | A measure of the energy released by an earthquake |
Tsunamis | Powerful seismic sea wave the begins over an ocean-floor earthquake, can reach 30 m in height when approaching land, and can cause destruction in coastal areas. |
Seismic Safe | Describes the ability of structures to stand up against the vibrations caused by an earthquake. |
Volcanoes | Cone-shaped hill or mountain formed when hot magma, solids, and gas erupt onto Earths surface through a vent. |
Lava | Molten rock flowing onto Earths surface |
Sheild Volcano | Large, broad volcano with gently sloping sides that is formed by the buildup of basaltic layers. |
Cinder Cone Volcano | Relatively small volcano formed by moderate to explosives eruptions of tephra |
Composite Volcano | Steep-sided volcano formed from alternating layers of violent eruptions of tephra and quiter versions of lava |
Rifts | Long crack, fissure, or trough that forms between tectonic plates moving apart at plate boundaries |
Hot Spots | Hot, molten rock material that has been forces upward from deep inside Earth, which may cause magma to break through Earth's mantle and crust and may form volcanoes |
Normal Fault | Rocks are pulled apart |
Strike-Slip Fault | Rock are Sheared |
Reverse Fault | Rock are compressed |
Tephra | Bits of rock or solidified lava dropped from the air |
Earthquakes | Movements of the ground that occurs when rocks inside Earth pass their elastic limit, break suddenly, and experience elastic rebound. |
Fault | Fracture that occurs when rocks break and that result in relative movement of opposing sides; can form as a result of compression, being pulled apart, or shear |
Seismic Waves | Earthquake waves, including primary waves, secondary waces, and surface waves. |
Focus | Point deep inside Earth where energy is, realeased, causing an earthquake |
Epicenter | Point on Earths surface directly above an earthquakes focus |
Seismograph | Instument used to record seismic waves |
Magnitude | A measure of the energy released by an earthquake |
Tsunamis | Powerful seismic sea wave the begins over an ocean-floor earthquake, can reach 30 m in height when approaching land, and can cause destruction in coastal areas. |
Seismic Safe | Describes the ability of structures to stand up against the vibrations caused by an earthquake. |
Volcanoes | Cone-shaped hill or mountain formed when hot magma, solids, and gas erupt onto Earths surface through a vent. |
Lava | Molten rock flowing onto Earths surface |
Sheild Volcano | Large, broad volcano with gently sloping sides that is formed by the buildup of basaltic layers. |
Cinder Cone Volcano | Relatively small volcano formed by moderate to explosives eruptions of tephra |
Composite Volcano | Steep-sided volcano formed from alternating layers of violent eruptions of tephra and quiter versions of lava |
Rifts | Long crack, fissure, or trough that forms between tectonic plates moving apart at plate boundaries |
Hot Spots | Hot, molten rock material that has been forces upward from deep inside Earth, which may cause magma to break through Earth's mantle and crust and may form volcanoes |
Normal Fault | Rocks are pulled apart |
Strike-Slip Fault | Rock are Sheared |
Reverse Fault | Rock are compressed |
Tephra | Bits of rock or solidified lava dropped from the air |
Earthquakes | Movements of the ground that occurs when rocks inside Earth pass their elastic limit, break suddenly, and experience elastic rebound. |
Fault | Fracture that occurs when rocks break and that result in relative movement of opposing sides; can form as a result of compression, being pulled apart, or shear |
Seismic Waves | Earthquake waves, including primary waves, secondary waces, and surface waves. |
Focus | Point deep inside Earth where energy is, realeased, causing an earthquake |
Epicenter | Point on Earths surface directly above an earthquakes focus |
Seismograph | Instument used to record seismic waves |
Magnitude | A measure of the energy released by an earthquake |
Tsunamis | Powerful seismic sea wave the begins over an ocean-floor earthquake, can reach 30 m in height when approaching land, and can cause destruction in coastal areas. |
Seismic Safe | Describes the ability of structures to stand up against the vibrations caused by an earthquake. |
Volcanoes | Cone-shaped hill or mountain formed when hot magma, solids, and gas erupt onto Earths surface through a vent. |
Lava | Molten rock flowing onto Earths surface |
Sheild Volcano | Large, broad volcano with gently sloping sides that is formed by the buildup of basaltic layers. |
Cinder Cone Volcano | Relatively small volcano formed by moderate to explosives eruptions of tephra |
Composite Volcano | Steep-sided volcano formed from alternating layers of violent eruptions of tephra and quiter versions of lava |
Rifts | Long crack, fissure, or trough that forms between tectonic plates moving apart at plate boundaries |
Hot Spots | Hot, molten rock material that has been forces upward from deep inside Earth, which may cause magma to break through Earth's mantle and crust and may form volcanoes |
Normal Fault | Rocks are pulled apart |
Strike-Slip Fault | Rock are Sheared |
Reverse Fault | Rock are compressed |
Tephra | Bits of rock or solidified lava dropped from the air |
Earthquakes | Movements of the ground that occurs when rocks inside Earth pass their elastic limit, break suddenly, and experience elastic rebound. |
Fault | Fracture that occurs when rocks break and that result in relative movement of opposing sides; can form as a result of compression, being pulled apart, or shear |
Seismic Waves | Earthquake waves, including primary waves, secondary waces, and surface waves. |
Focus | Point deep inside Earth where energy is, realeased, causing an earthquake |
Epicenter | Point on Earths surface directly above an earthquakes focus |
Seismograph | Instument used to record seismic waves |
Magnitude | A measure of the energy released by an earthquake |
Tsunamis | Powerful seismic sea wave the begins over an ocean-floor earthquake, can reach 30 m in height when approaching land, and can cause destruction in coastal areas. |
Seismic Safe | Describes the ability of structures to stand up against the vibrations caused by an earthquake. |
Volcanoes | Cone-shaped hill or mountain formed when hot magma, solids, and gas erupt onto Earths surface through a vent. |
Lava | Molten rock flowing onto Earths surface |
Sheild Volcano | Large, broad volcano with gently sloping sides that is formed by the buildup of basaltic layers. |
Cinder Cone Volcano | Relatively small volcano formed by moderate to explosives eruptions of tephra |
Composite Volcano | Steep-sided volcano formed from alternating layers of violent eruptions of tephra and quiter versions of lava |
Rifts | Long crack, fissure, or trough that forms between tectonic plates moving apart at plate boundaries |
Hot Spots | Hot, molten rock material that has been forces upward from deep inside Earth, which may cause magma to break through Earth's mantle and crust and may form volcanoes |
Normal Fault | Rocks are pulled apart |
Strike-Slip Fault | Rock are Sheared |
Reverse Fault | Rock are compressed |
Tephra | Bits of rock or solidified lava dropped from the air |