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CHAPTERS FROM GEOLOGY
CHAPTERS FROM GEOLOGY

... Igneous rocks are formed by the solidification of molten or partly molten mobile material termed magma. The nature of magma cannot be directly observed because it originates from the partial melting of the lower crust and upper mantle of the Earth, usually at depths between 50 and 200 km below the s ...
continental drift / plate tectonics test review
continental drift / plate tectonics test review

... 13. So, as new rocks are formed along mid-ocean ridges, older rocks are subducted – and destroyed- into trenches. These processes balance, so that the size of the earth’s crust REMAINS CONSTANT ...
Benchmark 1 Study Guide 6th Grade Earth Science Mr. Ventiquattro
Benchmark 1 Study Guide 6th Grade Earth Science Mr. Ventiquattro

... 17. Divergent plates, move away from each other 18. Convergent subduction, ocean plate hits continental plate and ocean plate sinks back into mantle ...
"Plate Tectonics" Extra Credit Assignment
"Plate Tectonics" Extra Credit Assignment

... 2. The inner core is made mostly of ____________ and is found __________ miles to _____________miles below the surface and is about ____________ in diameter. 3. What is the Earth’s only liquid layer? ____________________________ 4. Is the crust the thickest under the ocean or under the continents? _ ...
Slide 1
Slide 1

... In addition to studying how life changes and diversifies over time, some evolutionary biologists are trying to understand how life originated on Earth. This too requires the careful examination and interpretation of many indirect clues. In one well-known series of experiments in 1953, American chemi ...
Plate Tectonic Theory
Plate Tectonic Theory

... which one gets forced up and which one down….More dense plate sinks under other past • Oceanic Crust is more dense than continental crust ...
Notes: Plate Tectonics
Notes: Plate Tectonics

... • A system is a group of parts that work together as a whole. • The constant flow, or cycling, of matter through the Earth system is driven by energy. • Energy is the ability to do work. • Energy that drives the Earth system has two main sources: 1.) heat from the sun 2.) heat flowing out of Earth a ...
Plate Tectonics
Plate Tectonics

Tectonic plates - Hobbs High School
Tectonic plates - Hobbs High School

... crushes & breaks rocks along a fault. Rocks may be brittle- (rock and mineral grains are broken and crushed) or it may be ductile(plastic behavior occurs.) ...
Chapter Two Geography of the Ocean Basins Figure 02_02
Chapter Two Geography of the Ocean Basins Figure 02_02

... – Occasionally, at random intervals, the Earth's magnetic field reverses. New rock formed from magma records the orientation of Earth's magnetic field at the time the magma cools. – Studies of the sea floor revealed "stripes" of alternating magnetization parallel to the midmidoceanic ridges. This is ...
Internal Structure of the Earth
Internal Structure of the Earth

... How do we know there are four layers? • __________________________________ • Using ________ waves, they can tell whether an object is a _____ or a _____, so by using that information, they theorized about the interior layers of the Earth ...
Indirect evidence
Indirect evidence

... 7. Pressure increases the deeper you go because there is more and more weight on top. If you go down one mile, there is a mile of rock above pushing down. ...
1 Rheology: How Rocks Behave
1 Rheology: How Rocks Behave

... But  how  does  this  “flow”  differ  for  different  types  of  deformation?  Let  us  examine  a  number  of  materials  and  think   about  how  the  process  of  deformation  differs  between  them,  why  this  may  be,  and  if ...
Earth Quakes
Earth Quakes

... waves: the slowest type of waves which only travel along the Earth’s surface, not the interior like the S and P body waves.  Surface waves usually cause the most destruction because they move the ground and take the longest time to pass.  The point where the waves originate is where the rock fails ...
Fulltext PDF
Fulltext PDF

... gradients between the Crust and the Core, like the convective flow of water when heated in a beaker (Figure 2). The energy for the above circulations is derived from the heat produced from the incessant decay of radioactive elements in the rocks throughout the Earth's interior. These convection curr ...
The Four Layers
The Four Layers

... The crust is composed of two basic rock types granite and basalt. The continental crust is composed mostly of granite. The oceanic crust consists of a volcanic lava rock called basalt. Basaltic rocks of the ocean plates are much denser and heavier than the granite rock of the continental plates. B ...
The Earth`s Changing Surface
The Earth`s Changing Surface

... Rift Valley A valley ...
presentación - Vicens Vives
presentación - Vicens Vives

... – Check that the students can describe the Milky Way and the Solar System, and identify the main celestial bodies in each. – Confirm that they can describe and distinguish between the different parts of the Earth. – Evaluate if they can distinguish between the three layers of the geosphere and descr ...
Ch. 1 Layers of the Earth
Ch. 1 Layers of the Earth

... There are 2 types of seismic waves. These waves are called Primary Waves and Secondary Waves. 1. P- Waves travel through solids, liquids, & gases. And also travel at a faster rate than S-waves. ...
GE 121 Physical and Historical Geology I Earth’s Dynamic Systems 10
GE 121 Physical and Historical Geology I Earth’s Dynamic Systems 10

... 4. Numerical time designates a specific duration of time in units of hours, days, or years. In geology, long periods of absolute time can be measured by radiometric dating. ...
Sea-Floor Spreading
Sea-Floor Spreading

... The theory of plate tectonics says that the lithosphere is broken into pieces called tectonic plates. The plates have a thin layer of crust above a layer of cool hard rocks. Most of them have both continental and oceanic crust. These tectonic plates fit together like joints made by a carpenter. Ther ...
geology stratigraphy geological time scale
geology stratigraphy geological time scale

... which have led to its present state. Æ The science that deals with the dynamics and physical history of Earth, the rocks of which it is composed, and the physical, chemical, and biological changes that it has undergone and is undergoing. ...
Inside the Earth
Inside the Earth

...  made up of mostly iron ...
the facinating article
the facinating article

Lecture 13 Summary
Lecture 13 Summary

< 1 ... 171 172 173 174 175 176 177 178 179 ... 283 >

Geochemistry

Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans. The realm of geochemistry extends beyond the Earth, encompassing the entire Solar System and has made important contributions to the understanding of a number of processes including mantle convection, the formation of planets and the origins of granite and basalt.
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