Tectonics of the Precambrian
... both areas • Key point: there was not just one zone of orogeny as in the conventional theory ...
... both areas • Key point: there was not just one zone of orogeny as in the conventional theory ...
Mid-Ocean Ridges
... The Surface of the Earth 2 levels: – elevated continents – submerged ocean basins What causes these surface features? We must know what goes on inside the Earth ...
... The Surface of the Earth 2 levels: – elevated continents – submerged ocean basins What causes these surface features? We must know what goes on inside the Earth ...
Geology * Part II - Hatboro
... 2. Alfred Wegener developed the idea that the continents were once joined and have since drifted apart. The once giant land mass was known as Pangaea. 3. The Theory of Plate Tectonics explains the plates constant, slow motion, driven by convection currents in the mantle. It combines the theories of ...
... 2. Alfred Wegener developed the idea that the continents were once joined and have since drifted apart. The once giant land mass was known as Pangaea. 3. The Theory of Plate Tectonics explains the plates constant, slow motion, driven by convection currents in the mantle. It combines the theories of ...
Name Date
... 2. olivine and pyroxene 3. pyroxene and orthoclase 4. orthoclase and quartz I5. An igneous rock contains large mineral crystals. The best conclusion to make about this rock is that this rock 1. contains plagioclase and pyroxene 2. is felsic and has a low density 3. once contained small crystals whic ...
... 2. olivine and pyroxene 3. pyroxene and orthoclase 4. orthoclase and quartz I5. An igneous rock contains large mineral crystals. The best conclusion to make about this rock is that this rock 1. contains plagioclase and pyroxene 2. is felsic and has a low density 3. once contained small crystals whic ...
Plate Tectonics
... Earth’s Layers The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. ...
... Earth’s Layers The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. ...
Splash Screen
... Earth’s Structure (cont.) • Many scientists believe that most of the landmasses forming our present-day continents were once part of one gigantic supercontinent called Pangaea. • Due to continental drift, they slowly separated. • Due to plate tectonics, the physical features of the planet are const ...
... Earth’s Structure (cont.) • Many scientists believe that most of the landmasses forming our present-day continents were once part of one gigantic supercontinent called Pangaea. • Due to continental drift, they slowly separated. • Due to plate tectonics, the physical features of the planet are const ...
File - Native Expeditions
... Formed deep within the lithosphere from extreme pressure and/or heat Metamorphic rocks form in a solid state and the composition is change chemically (usually from hot water) Examples: Limestone to Marble, Shale to Slate, Granite to Gneiss ...
... Formed deep within the lithosphere from extreme pressure and/or heat Metamorphic rocks form in a solid state and the composition is change chemically (usually from hot water) Examples: Limestone to Marble, Shale to Slate, Granite to Gneiss ...
Layers of the Earth
... While most of the core is liquid, the ______________________________________ Nickel and Iron ...
... While most of the core is liquid, the ______________________________________ Nickel and Iron ...
Study Guide / Notes 11
... 10. There are no abrupt breaks in the seismic velocities through the lower mantle. This suggests that the lower mantle is homogeneous. 11. Shear waves (S-waves) cannot travel through a liquid. S-waves passing through the earth that intercept the outer core are blocked. This indicates that the outer ...
... 10. There are no abrupt breaks in the seismic velocities through the lower mantle. This suggests that the lower mantle is homogeneous. 11. Shear waves (S-waves) cannot travel through a liquid. S-waves passing through the earth that intercept the outer core are blocked. This indicates that the outer ...
Geology The difference between rocks and minerals
... 1. First make the 'cone' of the baking soda volcano. Mix 6 cups flour, 2 cups salt, 4 tablespoons cooking oil, and 2 cups of water. The resulting mixture should be smooth and firm (more water may be added if needed). 2. Stand a soda bottle in the baking pan and mold the dough around it into a volca ...
... 1. First make the 'cone' of the baking soda volcano. Mix 6 cups flour, 2 cups salt, 4 tablespoons cooking oil, and 2 cups of water. The resulting mixture should be smooth and firm (more water may be added if needed). 2. Stand a soda bottle in the baking pan and mold the dough around it into a volca ...
Crust - Spaulding Middle School
... These are maps that use symbols to portray the land as if viewed from above. They provide information on elevation, relief, and slope of the ground surface, as well as the location of roads, buildings, swamps, and other features, natural and man-made. Along with the scale and symbols, the cont ...
... These are maps that use symbols to portray the land as if viewed from above. They provide information on elevation, relief, and slope of the ground surface, as well as the location of roads, buildings, swamps, and other features, natural and man-made. Along with the scale and symbols, the cont ...
CHANGING EARTH NOTES
... -VW: lithosphere: ______________________________________ ______________________________________ A: The Theory: - Theory of ____________________ : moving tectonic plates, not just continents, is the present theory. - The ____________________ is broken into these plates. - There are about __________ ...
... -VW: lithosphere: ______________________________________ ______________________________________ A: The Theory: - Theory of ____________________ : moving tectonic plates, not just continents, is the present theory. - The ____________________ is broken into these plates. - There are about __________ ...
Internal Structure of the Earth and Lithosphere
... Land use planning is an essential tool for pollution control and prevention. Land use categories refer to the different socioeconomic activities in a certain area, the human behaviors they create and their effect on the environment. These activities take place at a local level but contribute to glob ...
... Land use planning is an essential tool for pollution control and prevention. Land use categories refer to the different socioeconomic activities in a certain area, the human behaviors they create and their effect on the environment. These activities take place at a local level but contribute to glob ...
2015-2016 EARTHS HIST Chapter 15 Section 2
... to determine the relative age of the rock layers and the events that disturbed them. ...
... to determine the relative age of the rock layers and the events that disturbed them. ...
Plate Tectonics - East Hanover Township School District
... Earth’s Layers The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. ...
... Earth’s Layers The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. ...
2008 EXAM 1 With Answers
... 3) Each question constitutes 4 points each, 100 points total each exam, weighted as above. 4) Only one correct answer to each question. 5) Suggestions: Look for KEY words in any question. Answer all the ones you're sure of, then go back and work on the rest. ...
... 3) Each question constitutes 4 points each, 100 points total each exam, weighted as above. 4) Only one correct answer to each question. 5) Suggestions: Look for KEY words in any question. Answer all the ones you're sure of, then go back and work on the rest. ...
Unit VI: Circulation of the Solid Earth
... 2. Why does the core convect? Density differences. Radioactivity: Radioactive decay releases heat energy. Hot core heats the overlying mantle, so the outer edge core is coolest. Causes a fundamental instability. ...
... 2. Why does the core convect? Density differences. Radioactivity: Radioactive decay releases heat energy. Hot core heats the overlying mantle, so the outer edge core is coolest. Causes a fundamental instability. ...
Introduction to Geomagnetism
... The magnetic record of Earth's history that is frozen into crustal rocks has provided, perhaps, the most important geophysical evidence of past and on-going plate-tectonic processes. The nearly static magnetic field that is our strong dipolar geomagnetic field has been most interesting to geolog ...
... The magnetic record of Earth's history that is frozen into crustal rocks has provided, perhaps, the most important geophysical evidence of past and on-going plate-tectonic processes. The nearly static magnetic field that is our strong dipolar geomagnetic field has been most interesting to geolog ...
Changes to Earth`s Surface
... sediments cover dead plants or animals, fossils can form. Fossils are the remains or traces of animals and plants that lived long ago. Fossils allow people to study organisms that have been extinct for thousands or millions of years. Scientists date the fossils by where they were found in the layers ...
... sediments cover dead plants or animals, fossils can form. Fossils are the remains or traces of animals and plants that lived long ago. Fossils allow people to study organisms that have been extinct for thousands or millions of years. Scientists date the fossils by where they were found in the layers ...
the geology of the moon
... altering their characteristics). Studies have shown that the samples are similar to Earth rocks. Generally Lunar rocks have one tenth as much sodium and potassium as Earth rocks. Moon basalts contain more titanium than terrestrial basalts. ...
... altering their characteristics). Studies have shown that the samples are similar to Earth rocks. Generally Lunar rocks have one tenth as much sodium and potassium as Earth rocks. Moon basalts contain more titanium than terrestrial basalts. ...
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.