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Section 19.1 - CPO Science
Section 19.1 - CPO Science

... By studying what happens to the waves on their path through Earth, scientists are able to make detailed maps of Earth’s interior… 1. When S-waves are produced on one side of Earth due to an earthquake, there is a large area on the other side where the waves can’t be detected. 2. Scientists know that ...
CH. 10.2 Intrusive Igneous Activity “What`s a pluton?” Structures that
CH. 10.2 Intrusive Igneous Activity “What`s a pluton?” Structures that

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Chapter 2
Chapter 2

... Contains oxygen we breath and protects the earth from space debris. Helps control the climate.  Lithosphere-The solid rock portion of the earths surface. Some of the lithosphere is below water and forms the ocean floor.  Hydrosphere-Water elements on the earth. (lakes, oceans, rivers, and seas).  ...
WORLD GEOGRAPHY
WORLD GEOGRAPHY

... 2.What is the difference between a tornado and a hurricane? (think about where it starts) -tornado-starts over land; hurricane is a circular storm that starts over water 3.What type of forest looses their leaves in winter? ...
UNIT 5 PLANET EARTH
UNIT 5 PLANET EARTH

... Petrified- a rock like substance Carbonaceous film- a type of fossil found in sedimentary rock when organic materials are compressed Original remains- fossils Trace fossils- evidence of animal activity TOPIC 9 GEOGRAPHIC TIME Principle of superposition- geological theory older rock will be layered o ...
Word Sort Template
Word Sort Template

... Why is the Ozone layer important? What needs do all organisms have? ...
Inner Structure of the Earth 3. Mantle
Inner Structure of the Earth 3. Mantle

... broken into a number of large, moving plates. ...
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Climate Verses Weather
Climate Verses Weather

... -The physical climate system involves the earth's atmosphere, land surfaces, and oceans, along with the snow and ice that is so prominent in much of Canada. These components interact with one another and with aspects of the earth's biosphere to determine not only the day-to-day weather, but also the ...
Introduction to Geol.. - hrsbstaff.ednet.ns.ca
Introduction to Geol.. - hrsbstaff.ednet.ns.ca

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BrainPop-Earth`s Structure 1) If the earth`s mantle were completely

... c) It creates mass d) It creates the earth’s magnetic field 5) How deep would you have to drill to reach the center of the earth? a) About 60,000 km b) About 600,000 km c) About 600 km d) About 6,000 km 6) What do earthquake waves have in common with other waves? a) They travel in the same speed as ...
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Name____________________________

... Latitude: Measurement in degrees north or south (of equator). Hemisphere: One-half of a sphere (N-hemi, S-hemi). Equator: Line that divides N-hemi and S-hemi (longest parallel). Rheology: The study of the deformation and flow of matter. Convection: Transfer of heat within a liquid or gas. Conduction ...
1.0 Earth`s surface undergoes gradual and sudden changes
1.0 Earth`s surface undergoes gradual and sudden changes

... A model is an idea of something that cannot be fully known or seen. It is a way of demonstrating an understanding based on evidence that is collected and interpreted, based on current knowledge. Models can take many forms: drawings, constructions, and comparisons to similar things. What’s Inside Ear ...
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Convection Currents and Hot Spots

... hot rock expands, decreasing its density and begins to rise; • Colder and/or denser rock sinks ...
HOT SPOTS - Norwich High School
HOT SPOTS - Norwich High School

... hot rock expands, decreasing its density and begins to rise; • Colder and/or denser rock sinks ...
Igneous Petrology
Igneous Petrology

... Understand the role of magmatism in global evolution throughout earth history. We will take a global view in the remainder of today’s class. ...
PHY 150 - Astronomy Homework Assignment #4 October 9, 2007
PHY 150 - Astronomy Homework Assignment #4 October 9, 2007

... is radiation from the Sun which heats the Earth and causes the Earth’s weather. 6) Draw a cross-sectional picture of the Sun’s interior. Describe the main physical processes that occur at various depths within the Sun. Core - The temperature is on the order of 15 million degrees Kelvin and the densi ...
PlateTectonicsTheoryteachernotesL2 30.50KB
PlateTectonicsTheoryteachernotesL2 30.50KB

... the land on either side of the Atlantic 'fitted together' and must be related. 1912 - Alfred Wenger used 300 years of topological and geological evidence to put forward his theory that the continents were once all joined together in an ancient supercontinent called Pangaea. He proposed that the con ...
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300_S2005_solid_earth

... Bowen’s series for crystallization temperature Classification of igneous rocks – by amount of silica present rich = felsic (eg granite, rhyolite) intermediate (eg diorite, andesite) poor = mafic (eg. basalt, gabbro) low in silica = low viscosity = flows easily high in silica = high viscosity kinds o ...
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... Layers of the Earth- crust, mantle, core, lithosphere, asthenosphere Plate Tectonics- what is it? What is the evidence? How does it work (what’s the mechanism)? Plate boundaries & landforms associated with boundaries, mechanisms such as convection & slab-pull Earthquakes- p & s waves, faults, epicen ...
Jeopardy 19,21(#3) - Heritage Collegiate
Jeopardy 19,21(#3) - Heritage Collegiate

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Density of Earth Materials Lab - Mercer Island School District
Density of Earth Materials Lab - Mercer Island School District

... composition. The crust of Earth is divided into two types: oceanic and continental. Most oceanic crust is composed of the rock basalt. Basalt is mafic (which means it has a high magnesium and iron content), composed of the minerals: calcium-rich plagioclase feldspar, olivine, amphibole, and pyroxene ...
Science OGT Review
Science OGT Review

... Places along the equator are hot year round because they are in direct contact with the sun’s hottest rays or very close to them When the Northern Hemisphere is having winter, the Southern Hemisphere is having summer. This is because the Earth’s tilt brings the S. Hemishere in contact with the hotte ...
Landform Results
Landform Results

... A. Erosion process of moving sediment from one place to another. B. Frost action is the repeated freezing and thawing of water in cracks in rocks. C. Volcanic action results in the formation of igneous rock. ...
volcanoes - Etiwanda E
volcanoes - Etiwanda E

... • Effects of Plate Tectonics • Forces from Within the Earth ...
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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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