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topic_sen_wksht
topic_sen_wksht

... __________ b. Superstitions have been around forever. __________ c. People hold many superstitions beliefs about the moon. __________ d. Made of green cheese. Group 2 __________ a. The history of astronomy is interesting. __________ b. Ice age people recorded the appearance of new moons by making sc ...
Topic sentence worksheet
Topic sentence worksheet

... __________ b. Superstitions have been around forever. __________ c. People hold many superstitions beliefs about the moon. __________ d. Made of green cheese. Group 2 __________ a. The history of astronomy is interesting. __________ b. Ice age people recorded the appearance of new moons by making sc ...
Final Exam Study Guide Answers
Final Exam Study Guide Answers

... 3. A group of populations that interact with one another in a particular area is called a ___________? (Choose one- biome, community, ecosystem, environment) Ch. 6 ...
Test 5: Chapter 9 - Volcanoes and Earthquakes
Test 5: Chapter 9 - Volcanoes and Earthquakes

... 1. Most earthquakes occur along ______________ boundaries. 2. Most volcanoes erupt along ________________ plate boundaries. 3. Volcanoes form when _______________ flows through the crust. 4. Magma that is rich in gases will form a volcano that __________________ explosively. 5. Volcanoes with gentle ...
The Earth`s Crust
The Earth`s Crust

... ■ Most geologists think that all the continents were once part of one big supercontinent called Pangaea. ...
ASTR178-Week3
ASTR178-Week3

... Which of the following is a correct statement about seismic waves used to map the Earth’s interior structure? A. P waves are longitudinal and are able to travel through solids and liquids; S waves are transverse and can only travel through liquids. B. P waves are transverse and are able to travel t ...
DQ_SIN_04_17_2006
DQ_SIN_04_17_2006

... When the plates move, the continents move with them. Sometimes the continents are above two plates. (6) The continents split as the plates move. Tectonic plates can cause earthquakes as they move. Modern instruments show that about ninety percent of all earthquakes take place along a few lines in s ...
Slideshow
Slideshow

... Shape of the continents fit together like puzzle pieces Rocks are found in different continents that are the same composition Called this supercontinent Pangea, Greek for “all Earth” 245 Million years ago Could not explain why the plates moved http://members.enchantedlearning.com/subjects/astronomy/ ...
A Head
A Head

... Measurements using satellites have shown that the UK and the USA are getting further apart by about 2.5 cm every year. ...
Lecture 5 - Academic Home Page
Lecture 5 - Academic Home Page

... stressed blocks of Earth’s crust along a fault. The friction between huge blocks of rock causes them to size up, bringing the motion along that part of the fault to a temporary stop. While the fault remains locked by friction energy continues to build up as a result of the plate motion, causing rock ...
Convection Currents
Convection Currents

... Differences in temperature cause differences in density. Dense things sink and light things float. ...
English - Fabio Crameri
English - Fabio Crameri

EARTHQUAKES
EARTHQUAKES

... Pen stays relatively still due to inertia of heavy mass Rotating drum moves with the ground vibration ...
Name: _________________________ Period: ______ Date
Name: _________________________ Period: ______ Date

... B. Why are volcanoes and earthquakes found along these type of plate boundaries? Volcanoes- As one plate slides under another, hot rock material in the upper mantle is able to melt and become magma. It flows toward the surface, where it can erupt through cracks, producing volcanic mountains. Earthqu ...
earthquake
earthquake

... happens when there is discontinuity in the rock, so it appears as if there are two plates sliding or slipping against each other. The basic reason for these movements is the movement of the land itself. The earth's crust and upper part of the mantle are together called the lithosphere. While the lit ...
Crust
Crust

... z Because there’s more iron z Measured by speed of the seismic waves ...
Chapter 10 PowerPoint
Chapter 10 PowerPoint

... • Less dense magma flows sideways dragging the seafloor along. • As the seafloor spread apart, magma flows up through cracks in at the ridge forming new rock. ...
Earth Revealed #10: Geologic Time
Earth Revealed #10: Geologic Time

... Answer the following questions: 1. Different geologists use minerals in different ways. Explain how the following geologists use minerals in their field of study. a. Geochronologist b. Sedimentologist/Stratigrapher c. Igneous and Metamorphic Petrologist d. Structural Geologist 2. How many varieties ...
GeologyIntroduction - University of Hawaii
GeologyIntroduction - University of Hawaii

... • Studies entire spectrum of Hawaiian Islands physical environment, Birth and Life of the Isles • It is geology applied to: • Islands origin, volcanic formation and life stages • Awareness of unique geologic environment • Understand the geologic processes on the islands ...
The Dynamic Earth
The Dynamic Earth

... asthenosphere is the layer beneath the lithosphere. The asthenosphere is a plastic, solid layer of the mantle made of rock that flows very slowly and allows tectonic plates to move on top of it. Beneath the asthenosphere is the mesosphere, the lower part of the mantle. The Earth’s outer core is a de ...
Ch. 11 Earthquakes
Ch. 11 Earthquakes

... Stress is a force that can change the size & shape of rocks. ...
Where do earthquakes appear?
Where do earthquakes appear?

... • There are several different kinds of seismic waves, and they all move in different ways. The two main types of waves are body waves and surface waves. • Body waves can travel through the Earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Ea ...
Earth`s crust, the surface layer of the planet, is
Earth`s crust, the surface layer of the planet, is

... response to pressure underground. One block may move up while the other moves down. Sometimes the movement is enough to form valleys or mountains. Other times that movement is not vertical but horizontal, as one block slips along the fault relative to the block on the other side. Movement of crustal ...
In which of the following does convection occur
In which of the following does convection occur

... 17. Which of the following has particles with the greatest average kinetic energy and the least amount of thermal energy? A. a boiling pot of water B. a bath tub full of lukewarm water C. the flame of a candle D. a lake with a layer of ice on its surface 18. Why does a piece of metal expand when it ...
The Stability of Tibetan Mantle Lithosphere
The Stability of Tibetan Mantle Lithosphere

... The large area of thickened crust beneath the Tibetan Plateau is a consequence of sustained continental convergence between India and the Eurasian land mass during the last ∼50 m.y. Although the Tibetan crust has thickened, there has been much debate about the consequences for its sub-crustal mantle ...
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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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