Lecture Chapter 4 - Lynn Fuller`s Page
... • Lava cools much more quickly than magma because lava is on the surface of the Earth, where temperatures are much lower than they are at depth. • Extrusive rocks = quick cooling = fine grained • Intrusive rocks = slow cooling = coarse grained ...
... • Lava cools much more quickly than magma because lava is on the surface of the Earth, where temperatures are much lower than they are at depth. • Extrusive rocks = quick cooling = fine grained • Intrusive rocks = slow cooling = coarse grained ...
7-3 science notebook answers
... What explanation can you offer for several volcanoes located in a line on the seafloor erupting over time to form islands? Accept all reasonable responses. Sample answer: The volcanoes are probably located near where two oceanic plates meet. As the older plate was subducted, it melted. This melted m ...
... What explanation can you offer for several volcanoes located in a line on the seafloor erupting over time to form islands? Accept all reasonable responses. Sample answer: The volcanoes are probably located near where two oceanic plates meet. As the older plate was subducted, it melted. This melted m ...
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... stars came together because particles attracted to each other by gravity and angular momentum caused the material to rotate. In the early universe, the only chemical elements were hydrogen and helium. Nuclear reactions in stars formed the heavier elements and star explosions scattered them around sp ...
... stars came together because particles attracted to each other by gravity and angular momentum caused the material to rotate. In the early universe, the only chemical elements were hydrogen and helium. Nuclear reactions in stars formed the heavier elements and star explosions scattered them around sp ...
Å - Abbreviation for angstrom, a unit of length (10
... nucleus. Mass of element remains same, but atomic number increases by 1. B horizon - Soil zone of accumulation below A horizon. Here is deposited some material moved down from A horizon. big-bang theory - Theory that presently expanding universe originated as primeval cosmic fireball in very short p ...
... nucleus. Mass of element remains same, but atomic number increases by 1. B horizon - Soil zone of accumulation below A horizon. Here is deposited some material moved down from A horizon. big-bang theory - Theory that presently expanding universe originated as primeval cosmic fireball in very short p ...
Chapter 20: The Earth Through Time
... Traces of Earth’s past magnetic field preserved in old lava flows. ...
... Traces of Earth’s past magnetic field preserved in old lava flows. ...
The dynamics of subduction throughout the Earth`s history
... Possible parameterizations of vsubd ...
... Possible parameterizations of vsubd ...
Rheology of the mantle
... derived a viscosity for the lower mantle of ~ 1 0 2 6 - 1 0 2 7 poises by assuming that the earth's nonhydrostatic bulge is due to the delayed readjustment of the earth's shape to a slowing rate of rotation. This assumption rested on their belief that the bulge was anomalously larger than other depa ...
... derived a viscosity for the lower mantle of ~ 1 0 2 6 - 1 0 2 7 poises by assuming that the earth's nonhydrostatic bulge is due to the delayed readjustment of the earth's shape to a slowing rate of rotation. This assumption rested on their belief that the bulge was anomalously larger than other depa ...
Chapter 5: Fast Changes on Earth
... in Earth’s crust that are caused by a sudden shift of Earth’s plates. Earthquakes are not the only changes that happen when plates move. Mountains and volcanoes form as plates move, too. ...
... in Earth’s crust that are caused by a sudden shift of Earth’s plates. Earthquakes are not the only changes that happen when plates move. Mountains and volcanoes form as plates move, too. ...
Understanding Plate Boundaries
... Plate tectonics is the theory that the earth’s lithosphere is broken into plates that are in constant motion. The edges of these plates may be sliding past each other, spreading apart, or colliding. Over geological time, important processes—such as the formation of mountain ranges, earthquakes, and ...
... Plate tectonics is the theory that the earth’s lithosphere is broken into plates that are in constant motion. The edges of these plates may be sliding past each other, spreading apart, or colliding. Over geological time, important processes—such as the formation of mountain ranges, earthquakes, and ...
Bodies of Salt Water (cont.)
... city in 1989, doing far less damage and claiming 67 lives. Most people remember it because it interrupted the World Series for 12 days while damages were repaired in Oakland and San Francisco. ...
... city in 1989, doing far less damage and claiming 67 lives. Most people remember it because it interrupted the World Series for 12 days while damages were repaired in Oakland and San Francisco. ...
PDF
... the Nakasib suture in NE Sudan. These data indicate that the interval 790–710 Ma was an important period of juvenile crust formation in NE Sudan, and that two enrichment cycles may be distinguished for ANS granitic rocks. ...
... the Nakasib suture in NE Sudan. These data indicate that the interval 790–710 Ma was an important period of juvenile crust formation in NE Sudan, and that two enrichment cycles may be distinguished for ANS granitic rocks. ...
Observing and understanding the Earth system variations from
... exchange between land and ocean water on a global scale are difficult to measure using traditional instruments. The solid-Earth’s surface and interior are changing constantly because of mantle convection, tectonics, and surface processes. These activities cause displacements and deformations of the E ...
... exchange between land and ocean water on a global scale are difficult to measure using traditional instruments. The solid-Earth’s surface and interior are changing constantly because of mantle convection, tectonics, and surface processes. These activities cause displacements and deformations of the E ...
Plate Tectonics
... As early as the 17th century, Nicolas Steno (1638-1686) fi rst proposed two concepts that fi eld geologists use every day. The fi rst concept stated that regardless of how intricately the sedimentary rocks exposed in an outcrop are folded or tilted, when the sediments from which they formed were ...
... As early as the 17th century, Nicolas Steno (1638-1686) fi rst proposed two concepts that fi eld geologists use every day. The fi rst concept stated that regardless of how intricately the sedimentary rocks exposed in an outcrop are folded or tilted, when the sediments from which they formed were ...
File
... • The Big Bang caused a cloud of dust to form. (13.7BYA) • The dust cloud forms into the Earth and the solar system (4.5BYA) • The universe began with a massive expansion • It is continuing to expand ...
... • The Big Bang caused a cloud of dust to form. (13.7BYA) • The dust cloud forms into the Earth and the solar system (4.5BYA) • The universe began with a massive expansion • It is continuing to expand ...
Chapter 4 Minerals
... b. What affects the size of the crystals of minerals formed from magma? (Look at Figure 4.2 on p. 79 and read the caption.) a. What is the size of crystals that form when magma cools slowly or in an open space? large / small b. What is the size of crystals that form when magma cools quickly or in a ...
... b. What affects the size of the crystals of minerals formed from magma? (Look at Figure 4.2 on p. 79 and read the caption.) a. What is the size of crystals that form when magma cools slowly or in an open space? large / small b. What is the size of crystals that form when magma cools quickly or in a ...
GEO_142_mid_term_I
... (32) 2 pts. The half-life of carbon-14 is about 6000 years. Assume that a sample of charcoal formed by burning of living wood 15,000 years ago. How much of the original carbon-14 would remain today? A) between 33% and 50% B) between 25% and 50% C) more than 50% D) between 12.5% and 25% (33) 2 pts. T ...
... (32) 2 pts. The half-life of carbon-14 is about 6000 years. Assume that a sample of charcoal formed by burning of living wood 15,000 years ago. How much of the original carbon-14 would remain today? A) between 33% and 50% B) between 25% and 50% C) more than 50% D) between 12.5% and 25% (33) 2 pts. T ...
ppt. - Science with Ms. Braget
... The largest recorded earthquake in the world was a magnitude 9.5 (Mw) in Chile on May 22, 1960. ...
... The largest recorded earthquake in the world was a magnitude 9.5 (Mw) in Chile on May 22, 1960. ...
How does thermal energy move around in the Earth?
... Elevation Profile tab. This will draw a profile in the North Atlantic that you will use to answer questions on your investigation sheet. u. Click on the Map Layers tab in the toolbox menu. Turn-on the Age of the Ocean Floor layer. ...
... Elevation Profile tab. This will draw a profile in the North Atlantic that you will use to answer questions on your investigation sheet. u. Click on the Map Layers tab in the toolbox menu. Turn-on the Age of the Ocean Floor layer. ...
MS Word - Lehigh`s Environmental Initiative
... Elevation Profile tab. This will draw a profile in the North Atlantic that you will use to answer questions on your investigation sheet. u. Click on the Map Layers tab in the toolbox menu. Turn-on the Age of the Ocean Floor layer. ...
... Elevation Profile tab. This will draw a profile in the North Atlantic that you will use to answer questions on your investigation sheet. u. Click on the Map Layers tab in the toolbox menu. Turn-on the Age of the Ocean Floor layer. ...
Deep within the earth, hot, molten material called magma is formed
... Deep within the earth, hot, molten material called magma is formed. At times, this is forced out onto the Earth’s surface when volcanoes erupt, where it cools quickly. Sometimes it is forced into the surrounding rock underground, where it cools slowly. Rocks formed in after ‘ignis,’ the Latin word f ...
... Deep within the earth, hot, molten material called magma is formed. At times, this is forced out onto the Earth’s surface when volcanoes erupt, where it cools quickly. Sometimes it is forced into the surrounding rock underground, where it cools slowly. Rocks formed in after ‘ignis,’ the Latin word f ...
Plates - Hendoscience
... past one another without moving apart or colliding with one another Normal Faults are formed when forces stretch the Earth’s crust Causes blocks of crust to break and tilt or slide down the broken surfaces of crust ...
... past one another without moving apart or colliding with one another Normal Faults are formed when forces stretch the Earth’s crust Causes blocks of crust to break and tilt or slide down the broken surfaces of crust ...
Sample Pre-Test
... a German word for “plate tectonics.” a name of a fossil found in both Africa and South America that led scientists to believe these continents were once connected. (e) the name of a supercontinent. ...
... a German word for “plate tectonics.” a name of a fossil found in both Africa and South America that led scientists to believe these continents were once connected. (e) the name of a supercontinent. ...
Age of the Earth
The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.Following the development of radiometric age dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to those of other stars, it appears that the Solar System cannot be much older than those rocks. Calcium-aluminium-rich inclusions – the oldest known solid constituents within meteorites that are formed within the Solar System – are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of Earth.It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the exact amount of time this accretion process took is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.