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Earth Science
Earth Science

... Cementation: the process by which dissolved minerals crystallize and glue particles together into one mass Chemical weathering: the process that breaks down rock through chemical changes Cirrus: wispy, feathery clouds made mostly of ice crystals that form at high levels, above about 6 kilometers Cli ...
Lecture 11 Review
Lecture 11 Review

... ρ density where density is a measure of how many atoms are packed in a given volume and bulk modulus measures the stiffness of the material lattice, i.e. ∆p change in pressure stress applied β= ...
Earth`s Structure
Earth`s Structure

...  9 reversals in last 4 million years  Some last millions of years, some thousands  Reverses full strength then decays to nothing for a few thousand years ...
Chapter_2_Section_2_NOTES
Chapter_2_Section_2_NOTES

... blocks of crust rub together they release energy in the form of __an Earthquake______. c) When two plates push against each other, the pressure makes the crust bend and buckle to form __steep mountains_________. ...
Earth Science PPT
Earth Science PPT

... • Resources, their origins, and how we classify them. • Layers of soil, rocks, and minerals. • Types of fossils, rocks, tree rings and other ways we can investigate “what happened before”. ...
File
File

... Please review your notes and make sure you are comfortable with the following terms. While our Q Assessment is not a vocabulary test, being familiar with these terms, all of which are found in your notes and can be found on my website (rossbrownscience.com) will certainly help you answer the questio ...
Heat From the outer core causes convection currents in the semi
Heat From the outer core causes convection currents in the semi

... other rocks, or dead plants and animals, which gradually build up and become cemented together. ...
Earth Science Name Web Inquiry—Plate Tectonics/Earth`s Interior
Earth Science Name Web Inquiry—Plate Tectonics/Earth`s Interior

... Standards: S6E5 Students will investigate the scientific view of how the earth’s surface is formed. a. Compare and contrast the Earth’s crust, mantle, and core, including temperature, density, and composition. d. Describe processes that change rocks and the surface of the earth. e. Recognize that li ...
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2.2 Notes

... Angeles, are prone to severe earthquakes. ...
the junior version pdf file
the junior version pdf file

... and characterized by plains, mountain ranges, faults (deep cracks in its surface) and volcanoes, where the surface communicates with the Earth’s deepest layers! The mantle is the intermediate layer, it is the thickest layer and occupies 82% of the volume of the Earth. It is formed by very hot rocks, ...
LESSON 10 – Earth`s History: Estimating Geologic Time
LESSON 10 – Earth`s History: Estimating Geologic Time

... another in a definite and determinable order, so any time period can be recognized by its fossil content • Drawn from theory of evolution • Fossil organisms become more similar to modern organisms with geologic time • Extinct fossils organisms never reappear in the fossil record ...
How Earth`s Broken Surface Keeps Us Alive
How Earth`s Broken Surface Keeps Us Alive

... We’ve now found over 3,500 planets around distant stars. Many of them have been described as rocky and “Earth-sized”, but that doesn’t mean they’re anything like our home. To help us better understand the different kinds of small, rocky planets astronomers and geoscientists (people who study rocks) h ...
CSCOPE Unit 7 Forces That Change the Earth
CSCOPE Unit 7 Forces That Change the Earth

... continental drift and the concept of seafloor spreading; proposed by Dan McKenzie Principle of Uniformitarianism—states that geologic forces that change the earth today, also operated in the past; proposed by James Hutton (Father of Modern Geology) ...
Unit_Chemistry_1b_Earth
Unit_Chemistry_1b_Earth

... Unit Chemistry 1b Oils, Earth and Atmosphere Earth’s Structure and Atmosphere Candidates should use their skills, knowledge and understanding of how science works: ...
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Chapter 2 Section 2

... -Crust = rocky shell from 2miles through 75 miles thick. ...
The Earth is Moving Big Book
The Earth is Moving Big Book

Vocabulary Review - POTOSI SCHOOL DISTRICT
Vocabulary Review - POTOSI SCHOOL DISTRICT

... an organism preserved by geological processes ...
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... e: inner core – very center of Earth; innermost layer; very dense 18. Of the parts listed in #17, which are the three main parts of the geosphere? crust, mantle, core 19. Of the parts listed in #17, which two make up the lithosphere? crust & upper mantle 20. What are the two sources of energy for th ...
Q-gameHow are winds named
Q-gameHow are winds named

... 56.If an organism no longer exists on Earth, it is said to be ___? 57.What does the law of superposition state? 58.A place where an old eroded surface is in contact with a newer rock layer is called ___? 59.The time it takes for ½ of the radioactive atoms in a sample of a radioactive element to deca ...
the Earth`s interior must be much greater than 2.8 g/cm3 for the
the Earth`s interior must be much greater than 2.8 g/cm3 for the

Chapter 6 lesson 1-4
Chapter 6 lesson 1-4

... Disconformity- exists where part of a sequence of a parallel rock layers is missing. Nonconformity- exists where sedimentary rock layers lie on top of an eroded surface of nonlayered igneous or metamorphic rock. Angular Unconformity- exists between horizonal rock layers and rock layers that are tilt ...
11/4 Convection Currents
11/4 Convection Currents

... Draw the movement & direction of tectonic plates Think back to the information you read over the last 3 days ...
Earth`s Layers Vocabulary
Earth`s Layers Vocabulary

... PHYSICAL (how it behaves) Lithosphere: (rocky sphere) The layer of Earth made up of the crust and rigid rock of the upper mantle, averaging about 40 kilometers thick and broken into tectonic plates. Asthenosphere: (weak sphere) The layer in Earth’s upper mantle and directly under the lithosphere in ...
layers of earth vocabulary
layers of earth vocabulary

... Pressure is a variable that affects the state of matter of Earth’s layers. Thick layers of rock apply great force to those layers buried below them, affecting the melting points of the buried rock. ...
Chapter 3 Test Review
Chapter 3 Test Review

... 5. The lithosphere is carried on a softer, but still firm, layer of rock called the______________________________(74) ...
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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.
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