22.4 Plate Tectonics
... sink into the mantle in the process of subduction. Subduction zones are near the edges of oceanic plates. As a plate sinks through a subduction zone, it bends, forming a depression in the ocean floor called a trench. ...
... sink into the mantle in the process of subduction. Subduction zones are near the edges of oceanic plates. As a plate sinks through a subduction zone, it bends, forming a depression in the ocean floor called a trench. ...
1 Inside the Earth - Middletown Public Schools
... we know so much about the mantle and the core? Much of what scientists know about Earth’s layers comes from studying earthquakes. Earthquakes create vibrations called seismic waves. Seismic waves travel at different speeds through the different layers of Earth. Their speed depends on the density and ...
... we know so much about the mantle and the core? Much of what scientists know about Earth’s layers comes from studying earthquakes. Earthquakes create vibrations called seismic waves. Seismic waves travel at different speeds through the different layers of Earth. Their speed depends on the density and ...
Comparing Densities of Earth`s Layers
... in two parts - a "solid" inner core with a "liquid" outer layer and is the final resting place for as much of the high density material as can get there.. ...
... in two parts - a "solid" inner core with a "liquid" outer layer and is the final resting place for as much of the high density material as can get there.. ...
fun with food! plate tectonics and our national parks
... 3). The plates, composed of Earth’s crust and uppermost mantle, ride on a warmer, softer layer of the mantle, the asthenosphere (Greek Fig. 1. Simulating plate boundaries with Oreo® cookies. The upper cookie is the lithosphere, the creamy filling the asthenosphere, and the lower cookie the lower man ...
... 3). The plates, composed of Earth’s crust and uppermost mantle, ride on a warmer, softer layer of the mantle, the asthenosphere (Greek Fig. 1. Simulating plate boundaries with Oreo® cookies. The upper cookie is the lithosphere, the creamy filling the asthenosphere, and the lower cookie the lower man ...
Sandstone is - Sackville School
... How are the properties of metamorphic rocks different from sedimentary rocks? Metamorphic rocks often have layer structures of crystals caused by the effect of heat and pressure. Metamorphic rocks are usually denser and harder than sedimentary rocks. ...
... How are the properties of metamorphic rocks different from sedimentary rocks? Metamorphic rocks often have layer structures of crystals caused by the effect of heat and pressure. Metamorphic rocks are usually denser and harder than sedimentary rocks. ...
Inner Planets Geology
... • Earth mostly rock and metal – Silicon, iron, and oxygen very common. ...
... • Earth mostly rock and metal – Silicon, iron, and oxygen very common. ...
19_lecture_ppt
... Causes of Earthquakes • Elastic rebound theory – Two plates press tightly together – Friction restricts motion – Stress builds until friction or rock rupture strength is overcome – Stressed rock snaps suddenly into new position ...
... Causes of Earthquakes • Elastic rebound theory – Two plates press tightly together – Friction restricts motion – Stress builds until friction or rock rupture strength is overcome – Stressed rock snaps suddenly into new position ...
Earth`s Layers Scale Model lab
... Your assignment is to construct a diagram that shows the four layers of Earth's structure as well as Mount Everest, Mariana Trench, and the Space Shuttle. These must be labeled and marked at the correct distances. Materials: paper strips scissors glue / rubber cement / tape meter stick small metric ...
... Your assignment is to construct a diagram that shows the four layers of Earth's structure as well as Mount Everest, Mariana Trench, and the Space Shuttle. These must be labeled and marked at the correct distances. Materials: paper strips scissors glue / rubber cement / tape meter stick small metric ...
PESPTprogramIntroContDrift12-13
... toward earth’s center where it may exceed _______________. 3. As you go deeper temperature ______________ (increases/decreases) and pressure ____________. Together with composition, this determines which layers will be liquid, solid, or semi-solid (called “plastic solid” meaning it is solid that flo ...
... toward earth’s center where it may exceed _______________. 3. As you go deeper temperature ______________ (increases/decreases) and pressure ____________. Together with composition, this determines which layers will be liquid, solid, or semi-solid (called “plastic solid” meaning it is solid that flo ...
First Hour Exam, Fall, 2001
... b. they only occur over areas > 100 square kilometers in size. c. the mafic magmas are very low in viscosity, allowing them to form these relatively thin, tabular bodies. d. they're natural bodies that occur along the coast of the Netherlands, where only mafic magmas are common. 9. Intermediate magm ...
... b. they only occur over areas > 100 square kilometers in size. c. the mafic magmas are very low in viscosity, allowing them to form these relatively thin, tabular bodies. d. they're natural bodies that occur along the coast of the Netherlands, where only mafic magmas are common. 9. Intermediate magm ...
Ch9 - Cloudfront.net
... • b.Subduction zones are never found at convergent boundaries. • c.Oceanic lithosphere is too buoyant to be forced down into the mantle. • d.Continental lithosphere is too dense to be forced down into the mantle. ...
... • b.Subduction zones are never found at convergent boundaries. • c.Oceanic lithosphere is too buoyant to be forced down into the mantle. • d.Continental lithosphere is too dense to be forced down into the mantle. ...
Plate Tectonics
... convection currents at work within the earth. Convection currents flow in different directions according to where the plate is. ...
... convection currents at work within the earth. Convection currents flow in different directions according to where the plate is. ...
Geology 8: Plate Tectonics Homework
... The oldest continental rocks found, are approximately _________ billion years old. The San Andreas Fault is an example of which type of plate boundary? ____________ According to sea-floor spreading, the age of the sea-floor should become younger towards a: combines the concepts of sea-floor spreadin ...
... The oldest continental rocks found, are approximately _________ billion years old. The San Andreas Fault is an example of which type of plate boundary? ____________ According to sea-floor spreading, the age of the sea-floor should become younger towards a: combines the concepts of sea-floor spreadin ...
Ensy 12 – Unit: Natural Disasters
... process as seen in the diagram. A tsunami can occur in any tidal state and even at low tide can still flood coastal areas. ...
... process as seen in the diagram. A tsunami can occur in any tidal state and even at low tide can still flood coastal areas. ...
Name: Period:___ Date:
... 26- The earth rotates / west to east, 15 degrees per hour, in 24 hours or one day 27- The earth revolves / counterclockwise, 1 degree per day, in 365 1/4 days or one year 28-The moon revolves / counterclockwise around the earth, in an elliptical orbit, in one month 29-The lower the eccentricity (clo ...
... 26- The earth rotates / west to east, 15 degrees per hour, in 24 hours or one day 27- The earth revolves / counterclockwise, 1 degree per day, in 365 1/4 days or one year 28-The moon revolves / counterclockwise around the earth, in an elliptical orbit, in one month 29-The lower the eccentricity (clo ...
Y10 Earthquakes - Learning on the Loop
... The sides of the gorge are made less steep by the weathering creating a V shape. Any material that falls from the valleys sides usually rolls into the river below and when the velocity of the river is fast enough the material is ...
... The sides of the gorge are made less steep by the weathering creating a V shape. Any material that falls from the valleys sides usually rolls into the river below and when the velocity of the river is fast enough the material is ...
File
... 16. An increase of 1 point on the Richter scale means an increase in earthquake strength this much? 17. An increase of 3 points on the Richter scale means an increase in earthquake strength this much? 18. Make sure you know how to read a seismogram printout (fig. 6 on page 223) 19. Make sure you kno ...
... 16. An increase of 1 point on the Richter scale means an increase in earthquake strength this much? 17. An increase of 3 points on the Richter scale means an increase in earthquake strength this much? 18. Make sure you know how to read a seismogram printout (fig. 6 on page 223) 19. Make sure you kno ...
Historical Geology
... – Today, geologists assume that the principles or laws of nature are constant – but the rates and intensities of change have varied through time – Some geologists prefer the term “actualism” ...
... – Today, geologists assume that the principles or laws of nature are constant – but the rates and intensities of change have varied through time – Some geologists prefer the term “actualism” ...
1 UNIT 10 Plate Tectonics Study Guide Chapters 1, 2, 9, and most of
... zones). - The Mariana Trench in the Pacific is more than 38,000 feet (7 miles) deep. Theory of Seafloor Spreading - H. H. Hess, a geology professor at Princeton proposed (1960) the theory of seafloor spreading. - Seafloor Spreading is a theory that the seafloor is spreading apart, propelled by conve ...
... zones). - The Mariana Trench in the Pacific is more than 38,000 feet (7 miles) deep. Theory of Seafloor Spreading - H. H. Hess, a geology professor at Princeton proposed (1960) the theory of seafloor spreading. - Seafloor Spreading is a theory that the seafloor is spreading apart, propelled by conve ...
seafloor-spreading
... 10. Mid-ocean ridges (rifts) normally form where tectonic plates are A) converging B) diverging C) stationary D) sliding past each other 11. According to the diagram, the deep trench along the west coast of South America is caused by movement of the oceanic crust that is A) sinking beneath the conti ...
... 10. Mid-ocean ridges (rifts) normally form where tectonic plates are A) converging B) diverging C) stationary D) sliding past each other 11. According to the diagram, the deep trench along the west coast of South America is caused by movement of the oceanic crust that is A) sinking beneath the conti ...
seafloor-spreading
... 10. Mid-ocean ridges (rifts) normally form where tectonic plates are A) converging B) diverging C) stationary D) sliding past each other 11. According to the diagram, the deep trench along the west coast of South America is caused by movement of the oceanic crust that is A) sinking beneath the conti ...
... 10. Mid-ocean ridges (rifts) normally form where tectonic plates are A) converging B) diverging C) stationary D) sliding past each other 11. According to the diagram, the deep trench along the west coast of South America is caused by movement of the oceanic crust that is A) sinking beneath the conti ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.