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Plate tectonics - Brogranoni-GEO1
Plate tectonics - Brogranoni-GEO1

... At a destructive boundary the plates are moving towards each other. This tends to involve a continental plate (a plate carrying land) and an oceanic plate (a plate carrying ocean). The oceanic plate is denser than the continental plate so, as they move together, the oceanic plate is forced underneat ...
Slide 1
Slide 1

... • Intrusive rocks solidify within the crust of the Earth and form great masses of regular crystals. • They are usually hidden because they are formed under the crust. • Uplift and erosion bring these rocks to the Earth’s surface over time, and they become ...
How accurately can we measure density within the Earth?
How accurately can we measure density within the Earth?

... convecting adiabatic mantle interior ...
Chapter 6 - SchoolRack
Chapter 6 - SchoolRack

...  This causes the oceanic plate (thinner) to slide under the continental plate (thicker)  The region where the ocean plate sinks down into the asthenosphere is called a subduction zone  C) Oceanic/Oceanic collisions - is when two oceanic plates ...
Chapter 18 Earthquakes and Volcanoes
Chapter 18 Earthquakes and Volcanoes

File
File

... which is solid metal, is surrounded by the liquid metal outer core. Earth’s interior gets warmer with depth If you have ever been in a cave, you may have noticed that the temperature in the cave was cool. That’s because the air and rocks beneath Earth’s surface are shielded from the warming effects ...
Topic 11
Topic 11

... A mineral is a naturally occurring, crystalline, inorganic substance with characteristic physical and chemical properties. - crystalline: solid with a definite structural pattern - inorganic: not derived from living organisms - minerals have chemical and physical properties which are used to identif ...
Portable Generators- to earth or not to earth
Portable Generators- to earth or not to earth

... Generators and inverters are supplied from the manufacturer, as either a bonded neutral to frame type or an isolated secondary winding type. From a lay man’s perspective, it is hard to distinguish between these two types of generators. The confusion does not just stop there, the use of standard RCD ...
review materials about plate tectonics
review materials about plate tectonics

... 3. This site has several maps that are like the one in the picture in #2 on the previous page of this doc. http://www.iris.edu/hq/files/programs/education_and_outreach/aotm/14/1.GPS_Background.pdf 4. You know how I like science info! Here’s a recent scientific article that is titled “Earth's tecton ...
earthquakes
earthquakes

... Liz LaRosa http://www.middleschoolscience.com 2009 for my 5th grade science class 2009 ...
Earthquakes - Blountstown Middle School
Earthquakes - Blountstown Middle School

... Liz LaRosa http://www.middleschoolscience.com 2009 for my 5th grade science class 2009 ...
PART 1 - earth science!
PART 1 - earth science!

... 2. The continental shelf is the section of the continental crust that extends under the water. 3. The continental slope is the steep incline section of the continental crust. It connects the continental shelf to the abyssal plain. 4. The abyssal plain is a large, flat, almost level of the ocean flo ...
Landforms depend on types of crust that meet
Landforms depend on types of crust that meet

... 8-3.6 Explain how the theory of plate tectonics accounts for the motion of the lithospheric plates, the geologic activities at the plate boundaries, & the changes in the landform areas over geologic time. ...
File - Hoblitzell`s Science Spot
File - Hoblitzell`s Science Spot

... During the past 10,000 years, there have been at least 60 different lahars of various sizes originating from Mount Rainier (Hoblitt and others, 1995:5). There are now over 100,000 homes and over 200,000 Puget Sound residents that work in buildings located on these deposits (Krakauer, 1996:34). The l ...
Section: Continental Drift
Section: Continental Drift

... ______1 . The German scientist Alfred Wegener proposed a hypothesis now called a. paleomagnetism. c. floating continents. b. continental drift. d. sea-floor spreading. ______ 2. Wegener hypothesized that the continents formed part of a single land mass, or a. mid-ocean ridge. c. supercontinent. b. m ...
SOL Planner
SOL Planner

... Apply the following major concepts regarding freshwater as to current and future water usage and availability:  A substantial amount of water is stored in permeable soil and rock underground.  The Earth’s fresh water supply is finite.  Water is continuously being passed through the hydrologic cyc ...
2.1 Tectonic Forces
2.1 Tectonic Forces

... Sedimentary rocks often have in them the remains of once-living organisms called fossils. Sedimentary rocks typically are formed in layers called strata. The layering of sedimentary rocks sometimes gives them the property of splitting along layer lines. The sand, silt and mud that become sedimentary ...
Science 20 Unit C Chapter 2 Suggested Answers
Science 20 Unit C Chapter 2 Suggested Answers

Tutorial Problems 1. Where Do Earthquakes Happen? 2. Where do
Tutorial Problems 1. Where Do Earthquakes Happen? 2. Where do

... rupture width of 45km and slip of average fault slip of 3m. Take modulus of rigidity, mu as 3.5 x 1010 N/m2 ...
Document
Document

... _____ 2. The process by which the shape of a rock changes because of stress is called a. seismology. c. deformation. b. elasticity. d. re-formation. _____ 3. When stress squeezes an object it is called a. compression. c. convergence. b. re-formation. d. tension. _____ 4. When stress stretches an obj ...
directed reading deforming the earth`s crust
directed reading deforming the earth`s crust

... _____ 2. The process by which the shape of a rock changes because of stress is called a. seismology. c. deformation. b. elasticity. d. re-formation. _____ 3. When stress squeezes an object it is called a. compression. c. convergence. b. re-formation. d. tension. _____ 4. When stress stretches an obj ...
01 - Mayfield City Schools
01 - Mayfield City Schools

... _____ 2. The process by which the shape of a rock changes because of stress is called a. seismology. c. deformation. b. elasticity. d. re-formation. _____ 3. When stress squeezes an object it is called a. compression. c. convergence. b. re-formation. d. tension. _____ 4. When stress stretches an obj ...
Rocks - TeacherWeb
Rocks - TeacherWeb

... • Law of Superposition: Top layer is the youngest in undisturbed layers of rocks • Strata/Stratified/Stratification: Layer of rocks • Fossils: Remain or trace of living thing • Index Fossil: Fossil remains of organism that lived a very brief time – often found in only one layer of rock • Mass Extinc ...
12.2 - Features of Plate Tectonics
12.2 - Features of Plate Tectonics

... As the plates are pushed outward in the oceans, it disappears underneath continental plate at the same time. This is called ______________________. Subduction is one plate pushing under another one. Areas of subduction, called __________________________, are often areas where volcanic eruptions and ...
HS Earth Standard 3.3 Plate Tectonics
HS Earth Standard 3.3 Plate Tectonics

... Essential Questions - 21st Century Skills and Readiness Competencies (District): 1. What geological, physical, and geographical features support the theory of plate tectonics? 2a. How do scientists explain the presence of glacial debris in tropical areas? 2b. How does the existence of mountain range ...
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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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