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Structure of the Earth Tectonics
Structure of the Earth Tectonics

... Caused by radio active decay of elements ...
ppt
ppt

... Interior temperature of Earth • Melting temperature increases with pressure • Pressure in core is so high that it may be solid material ...
Earth`s Interior
Earth`s Interior

... Basalt – more dense rock ...
Earth science SOL Review
Earth science SOL Review

... Earth Science Facts you need to know We have 2 high tides and 2 low tides every 24 hours. Tides are caused by the gravitational pull of the Earth and the Moon. Currents move from cold to warm areas. Upwelling brings cold, nutrient rich water from the bottom of ocean to the surface. This is rich in b ...
The Earth’s movement - Thomas Tallis Science Department
The Earth’s movement - Thomas Tallis Science Department

... • The Earth’s crust and the upper part of the mantle are cracked into a number of large pieces (tectonic plates) ...
Layers of Earth
Layers of Earth

... layers are crust, mantle, outer core, and the inner core. Scientists use seismographs after earthquakes to learn about Earth’s layers. This helps them see how the layers form the earthquakes. We live on the crust of the Earth it has grass and minerals. The crust is Earth’s outermost layer of Earth. ...
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... 17. How many degrees the earth is tilted. (hint: spell it out, don't use the numbers) 21. The scientist that is tied to the GEOCENTRIC theory. 22. A plate boundary where plates move away from each other. Down 2. Currents What is going on under Earth's surface causing tectonic plates to move. 3. A sp ...
Document
Document

... E. Core—the innermost layer of Earth made up mostly of iron and nickel. It is about 3486 km (2166 miles) in thickness. 1. Movements in Earth’s liquid outer core create a magnetic field. This is why as compass points north. F. Compositional vs. Physical Layers 1. The 3 layers listed above (crust, man ...
Spheres of the Earth
Spheres of the Earth

... • Life on Earth is supported by the atmosphere, solar energy, and our planet's magnetic fields. ...
Topic 12 Earth`s Dynamic Crust and Interior
Topic 12 Earth`s Dynamic Crust and Interior

... Topic 12 Earth’s Dynamic Crust and Interior Lithosphere: Crust: Small Scale Crustal Changes Law of Original Horizontality: What are three ways that rock layers are changed? ...
Earth interior
Earth interior

... The refraction index depends on the state of the matter (e.g. solid or liquid) Analysis of seismic waves reveals the presence and location of discontinuities at the interface between layers with different refraction index and the possible presence of liquid layers ...
Layers of the Earth
Layers of the Earth

... Interior of the Earth Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top.  Because of this, the crust is made of the lightest materials (rock- BASALTS and granites) and the core consists of heavy metals (nicke ...
10-25 miles
10-25 miles

... degrees F to 9000 degrees F 11. Made of Nickel and Iron 12. This liquid core produces a magnetic field that helps protect earth from coronal mass ejections (CME’s) produced by the sun. ...
How the Earth was Made
How the Earth was Made

... 15. On the average, over a lifetime how far will plates move apart? ...
Inside The Earth Unit Test Study Guide
Inside The Earth Unit Test Study Guide

... 9) If two objects of different densities are dropped in a beaker of water, would the more or less dense object sink fastest? 10) When a very dense tectonic plate collides with a less dense tectonic plate what generally occurs? ...
The Solar System
The Solar System

... Weathering and Erosion - breaking rocks apart • Physical (mechanical) weathering – glaciers moving, water (ice) expanding, wind, and plant roots – erosion: wind and water can loosen and move ...
Inside the Earth
Inside the Earth

... • 2240 km thick (1400 mi) • 6093 C (11,000 ˚ F) • Movement is source of Earth’s magnetic field ...
Earths moving surface
Earths moving surface

... These pieces move slowly over Earth’s surface. ...
Ch. 2 - Mr
Ch. 2 - Mr

... that we can not study the Earth’s core using visible light, we can study it using other senses. The most important thing we use to sense the Earth’s core are seismic waves. Seismic waves are waves of energy caused either by earthquakes, or by massive manmade explosions. • Scientists are able to meas ...
Geology Notes - My Teacher Pages
Geology Notes - My Teacher Pages

... • 2 kinds of movement of the earth – Convection cells: large volumes of heated rock that move following a pattern similar to the atmosphere (warmer is less dense) – Mantle plumes: mantle rock flows slowly upward, reaching the surface and spreading ...
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... currents (or currents in a liquid) is called a. radiation. b. conduction. c. convection. d. condensation. ...
Name
Name

... is older than the layer above it and younger than the layer below it. 4. The fossils of organisms that were widely distributed but only lived during a short period of time are called index fossils. 5. Index fossils useful to geologists because they tell the relative age of the rock in which they occ ...
Colliding Continents Answers
Colliding Continents Answers

... He didn’t know HOW continents moved 12. Heat escaping from the core creates convection_______________ currents ____________ in the next layer mantle of the Earth, the ______________________. ...
Earth Cycles Crossword - Western Reserve Public Media
Earth Cycles Crossword - Western Reserve Public Media

HOMOGENOUS EARTH
HOMOGENOUS EARTH

...  General observations about Wave Propagation: – P waves compress mail material through which they travel; Medium returns to original volume; Travel through sold (Elastic) faster than Liquid or Gas (inelastic) – S waves travel as shear waves; admitted by elasticity of solids; omitted by inelasticity ...
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Geophysics



Geophysics /dʒiːoʊfɪzɪks/ is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.Although geophysics was only recognized as a separate discipline in the 19th century, its origins go back to ancient times. The first magnetic compasses were made from lodestones, while more modern magnetic compasses played an important role in the history of navigation. The first seismic instrument was built in 132 BC. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox; and instruments were developed to measure the Earth's shape, density and gravity field, as well as the components of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean, and geophysics played an essential role in the development of the theory of plate tectonics.Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. Geophysical survey data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and soils, and assess sites for environmental remediation.
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