UNIT PLAN
... What is evolution? Establishing a case for the evolutionary theory What is the story of the evolution of the cell? Where did all of the organelles come from anyhow? Why is DNA so important? How genetic changes occur? Looking at meiosis Do I know my gene sequence? What happens when ...
... What is evolution? Establishing a case for the evolutionary theory What is the story of the evolution of the cell? Where did all of the organelles come from anyhow? Why is DNA so important? How genetic changes occur? Looking at meiosis Do I know my gene sequence? What happens when ...
Continental Drift - CoconinoHighSchool
... either collide and both be pushed up to form mountains, or one of the plates must be pushed down into the mantle and be destroyed. 5. There can never be gaps between plates, so if two plates move apart, as in the middle of the Atlantic, new rock will be formed to fill the space. 6. We know the Earth ...
... either collide and both be pushed up to form mountains, or one of the plates must be pushed down into the mantle and be destroyed. 5. There can never be gaps between plates, so if two plates move apart, as in the middle of the Atlantic, new rock will be formed to fill the space. 6. We know the Earth ...
The Chemical Composition of - Microscopy-UK
... orderly crystalline structure. All minerals also have a specific chemical composition, where most are made up of two or more elements. However, some minerals are made up of a single element and occur in pure form in nature; for instance, silver, gold, and copper are all pure elements. ...
... orderly crystalline structure. All minerals also have a specific chemical composition, where most are made up of two or more elements. However, some minerals are made up of a single element and occur in pure form in nature; for instance, silver, gold, and copper are all pure elements. ...
Continental Drift
... either collide and both be pushed up to form mountains, or one of the plates must be pushed down into the mantle and be destroyed. 5. There can never be gaps between plates, so if two plates move apart, as in the middle of the Atlantic, new rock will be formed to fill the space. 6. We know the Earth ...
... either collide and both be pushed up to form mountains, or one of the plates must be pushed down into the mantle and be destroyed. 5. There can never be gaps between plates, so if two plates move apart, as in the middle of the Atlantic, new rock will be formed to fill the space. 6. We know the Earth ...
Rocks, Minerals & the Rock Cycle
... heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are. ...
... heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are. ...
Earth`s History
... •Microfossils of bacteria and algae have been found in chert Southern Africa (3.1 billion years of age) Lake Superior area (1.7 billion years of age) •Plant fossils date from the middle Precambrian •Animal fossils date from the late Precambrian •Diverse and multicelled organisms exist by the close ...
... •Microfossils of bacteria and algae have been found in chert Southern Africa (3.1 billion years of age) Lake Superior area (1.7 billion years of age) •Plant fossils date from the middle Precambrian •Animal fossils date from the late Precambrian •Diverse and multicelled organisms exist by the close ...
WEATHERING AND SEDIMENTARY ROCKS
... Mechanical Weathering 1. Expansion and Contraction - the thermal heating and cooling of rocks causing expansion and contraction. 2. Frost Action - Water freezes at night and expands because the solid occupies greater volume. Action wedges the rocks apart. Requires adequate supply of moisture; moistu ...
... Mechanical Weathering 1. Expansion and Contraction - the thermal heating and cooling of rocks causing expansion and contraction. 2. Frost Action - Water freezes at night and expands because the solid occupies greater volume. Action wedges the rocks apart. Requires adequate supply of moisture; moistu ...
History of Ocean Basins
... suggests loss of nitrogen, carbon, and water, and perhaps a considerable proportion of original silicate material. He also points out that the lack of concentration of certain very volatile substances at the Earth's surface indicates that it never had a high surface temperature. This low temperature ...
... suggests loss of nitrogen, carbon, and water, and perhaps a considerable proportion of original silicate material. He also points out that the lack of concentration of certain very volatile substances at the Earth's surface indicates that it never had a high surface temperature. This low temperature ...
The Thermal Evolution of an Earth with Strong Subduction Zones
... tegrating heat flow rates from (1) backwardin time from leighnumberRat = pgaTR•/(n•t) that is a measure of Earth's present thermal state. For /3 = 1/3, Christensen convectiveinstability resisted by the bending lithosphere. [1985]findsthat the mantle coolsfrom a molten state to its It is cle• from (4 ...
... tegrating heat flow rates from (1) backwardin time from leighnumberRat = pgaTR•/(n•t) that is a measure of Earth's present thermal state. For /3 = 1/3, Christensen convectiveinstability resisted by the bending lithosphere. [1985]findsthat the mantle coolsfrom a molten state to its It is cle• from (4 ...
Slide 1
... (c) type of plate margin nearest the basin i.e., convergent, divergent, conservative (similar to Bally and Snelson, 1980) Other factors used are: hydrocarbon characteristics, types of sedimentary sequences filling the basin, and the tectonics that modify the sediment infill If on the other hand one ...
... (c) type of plate margin nearest the basin i.e., convergent, divergent, conservative (similar to Bally and Snelson, 1980) Other factors used are: hydrocarbon characteristics, types of sedimentary sequences filling the basin, and the tectonics that modify the sediment infill If on the other hand one ...
The Stability of Tibetan Mantle Lithosphere
... The large area of thickened crust beneath the Tibetan Plateau is a consequence of sustained continental convergence between India and the Eurasian land mass during the last ∼50 m.y. Although the Tibetan crust has thickened, there has been much debate about the consequences for its sub-crustal mantle ...
... The large area of thickened crust beneath the Tibetan Plateau is a consequence of sustained continental convergence between India and the Eurasian land mass during the last ∼50 m.y. Although the Tibetan crust has thickened, there has been much debate about the consequences for its sub-crustal mantle ...
ear 203 earth system science
... 1. Define the major global environmental problems. 2. Identify anthropogenic greenhouse gases, their sources and their effects. 3. Explain fundamental components of the Earth system and their interactions. 4. Differentiate between global warming and the greenhouse effect. 5. Explain the relationship ...
... 1. Define the major global environmental problems. 2. Identify anthropogenic greenhouse gases, their sources and their effects. 3. Explain fundamental components of the Earth system and their interactions. 4. Differentiate between global warming and the greenhouse effect. 5. Explain the relationship ...
Continents Adrift: An Introduction to Continental Drift
... 1. Prior to viewing the program, ask students the following about the region where they live: Do you know if there have been any earthquakes in this area? Do you think an earthquake is likely to occur in the future? Why or why not? Are there signs of past volcanic activity in the area? If so, where? ...
... 1. Prior to viewing the program, ask students the following about the region where they live: Do you know if there have been any earthquakes in this area? Do you think an earthquake is likely to occur in the future? Why or why not? Are there signs of past volcanic activity in the area? If so, where? ...
A. Sedimentary Rock
... Types of sedimentary rocks A. Clastic sedimentary rocks – formed from the abundant deposits of loose sediment found on Earth’s surface 1. Can be course-grained, medium-grained, or fine-grained B. Chemical sedimentary rocks – during chemical weathering, minerals can be dissolved and carried into lake ...
... Types of sedimentary rocks A. Clastic sedimentary rocks – formed from the abundant deposits of loose sediment found on Earth’s surface 1. Can be course-grained, medium-grained, or fine-grained B. Chemical sedimentary rocks – during chemical weathering, minerals can be dissolved and carried into lake ...
Plate Boundaries and Earth`s Land Features
... asthenosphere, which has the property called plasticity. This allows the plates to move across the top of it, carrying the continents and ocean basins with them as they move about. For example, North America and a good part of the Atlantic Ocean are on the North American Plate. The Theory of Plate T ...
... asthenosphere, which has the property called plasticity. This allows the plates to move across the top of it, carrying the continents and ocean basins with them as they move about. For example, North America and a good part of the Atlantic Ocean are on the North American Plate. The Theory of Plate T ...
Earth`s Layers Sunshine State STANDARDS SC.B.1.3.1: The
... The lithosphere is made up of many plates. As scientists studied Earth’s surface, they discovered that the lithosphere does not form a continuous shell around Earth. Instead, they found that the lithosphere is broken into many large and small slabs of rock called tectonic plates (tehk-TAHN-ihk). Sci ...
... The lithosphere is made up of many plates. As scientists studied Earth’s surface, they discovered that the lithosphere does not form a continuous shell around Earth. Instead, they found that the lithosphere is broken into many large and small slabs of rock called tectonic plates (tehk-TAHN-ihk). Sci ...
OCN100--Study Guide
... persons/nations/ ships/programs/research tools: (Note: You will find many of these described in Chapters 1-3; use the index to find any others) ...
... persons/nations/ ships/programs/research tools: (Note: You will find many of these described in Chapters 1-3; use the index to find any others) ...
BAESI: Earth and Life Through Time
... During the early 1960’s, it was discovered that changes in Earth’s magnetic polarity have been recorded into rocks on the seafloor (oceanic crust) as they cooled. Symmetrical banding on each side of mid-oceanic ridge systems. Younger rock near ridge, older away. ...
... During the early 1960’s, it was discovered that changes in Earth’s magnetic polarity have been recorded into rocks on the seafloor (oceanic crust) as they cooled. Symmetrical banding on each side of mid-oceanic ridge systems. Younger rock near ridge, older away. ...
Minerals and Rocks Outline •Matter, Atoms, etc. •Minerals •Igneous
... – basic building blocks of Earth – indicators of how Earth developed over geological time – mixture of one or more minerals Mineral – naturally occurring – inorganic crystalline solid – made of chemically bonded elements – with definite chemical composition Crystals Solid composed of atoms and molec ...
... – basic building blocks of Earth – indicators of how Earth developed over geological time – mixture of one or more minerals Mineral – naturally occurring – inorganic crystalline solid – made of chemically bonded elements – with definite chemical composition Crystals Solid composed of atoms and molec ...
(6-4 thru 6-6 PPT Questions) Why do you think craters on the Moon
... composed of iron, must be small. 10. The Moon’s weak magnetic field—10−4 times that of Earth’s magnetic field—suggests the presence of a small iron core, though this has not been confirmed. ...
... composed of iron, must be small. 10. The Moon’s weak magnetic field—10−4 times that of Earth’s magnetic field—suggests the presence of a small iron core, though this has not been confirmed. ...
as a PDF
... explains many geologic features, it is far from being complete. It took a long time to develop this theory because there were and continue to be more parts than previously thought. Scientists are still finding out new things about plate tectonics and the inner workings of the earth to explain why so ...
... explains many geologic features, it is far from being complete. It took a long time to develop this theory because there were and continue to be more parts than previously thought. Scientists are still finding out new things about plate tectonics and the inner workings of the earth to explain why so ...
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.