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Geophysics
The study of Earth using the combination of Geology and Physics, it lets us understand what is going on under the Earth's surface. Find questions on different types of seismic activities such as earthquakes and volcano eruptions here.
1,480 Questions
How can a folded mountain happen in the middle of a tectonic plate?
The tectonic plate boundaries come together and push up on each other to form mountains.
Does the earths magnetic field cause the earth to tilt?
No, the Earth's magnetic field does not cause the Earth to tilt. The tilt of the Earth's axis, also known as obliquity, is believed to have been caused by the gravitational influence of other planets during the early formation of the solar system. The Earth's magnetic field is generated by the movement of molten iron in its outer core.
How does coal help support the theory of continental drift?
It supports the theory because it can be found on all of the continents.
Where a major earthquake has happened in the past but not in a while is called a seismic?
Seismic gap.
What reason that strong earthquakes are more likely to happen in seismic gaps?
because pressure builds up in these places
Where would you find out about current seismic activity in the cascade mountain range?
The Cascade Range has been an active arc for about 36 million years as a result of plate convergence. ... The southern Washington Cascades are seismically active. Most earthquakesoccur along the 100-kilometer-long, north-northwest trending St. Helens seismic zone, where most focal mechanisms show dextral slip parallel to the trend of the zone and consistent with the direction of plate convergence. Other crustal earthquakes concentrate just west of Mount Rainier and in the Portland (Oregon) area. Few earthquakes occur north of Mount Rainier or south of Mount Hood.
Making slogan in science environment?
to make our science slogan we do in obedience in instruction
to make our science slogan we do in obedience in instruction
we do make the best
1.plant a tree.2.gren the earth.
and third we live happilly
ever after your life
After an earthquake which type of seismic waves reach seismometers last?
A surface wave is the last seismic wave to arrive after an earthquake.
Which metallic element is the most abundant by weight?
The most abundant metal in the earth crust is aluminium.
How are sedimentary rocks form?
Sedimentary rocks can be formed in various ways, and are classified by the method of formation or content. Broadly, sedimentary rock is classified as being clastic, organic, or chemical. Following are the three types and how they are formed.
Clastic sedimentary rock:
The majority of sedimentary rock on Earth is formed from particles of pre-existing rocks. This route begins with the weathering and erosion of sedimentary, igneous, or metamorphic rocks. Through these processes, larger rock is broken up into smaller particles which are transported by moving water, ice, gravity or wind, and deposited at the bottom of a lake, a river delta, an ocean, or similar location where further movement is restricted or slowed down. The rock particles can range in size from boulders to clay particles less than .002 mm in diameter. If these rock particles are covered by additional particles, eventually the weight from above will start the process of lithification. Lithification is the compaction and cementing together of sediment particles which form rock. Compaction squeezes out the fluids and space that exist between the particles, and cementation results when minerals form from the migrating solution. Once cementation occurs, the new sedimentary rock has been formed. Rocks formed in this manner include sandstone, shale, mudstone, breccia, and conglomerate.
Organic sedimentary rock:
Chalk and other fossiliferous limestones are composed of the skeletons of marine organisms. Coal is composed of vegetation that originated and was deposited in swampy and marshy waterlogged soils which prevented their full decay after their death. As their remains piled up and were covered by more and more deposits, they were compacted and cemented in the same manner as clastic rock.
Chemical sedimentary rock:
Sedimentary rock can also form when minerals in a body of water have so saturated the water that they precipitate out, like a cloud that is so full of moisture that it pours out rain. Some limestones are formed in this manner as the mineral calcite precipitates out of a saturated solution and undergoes the process of compaction and cementation. The supersaturated solutions can also be caused by evaporation of a body of water high in mineral solution content. As the water evaporates, the mineral percentage of the remaining solution becomes higher and higher, until the mineral crystallizes. Rocks such as rock salt and rock gypsum are formed in this manner.
It is formed by the sedimentation of material at the Earth's surface and also in the bodies of water.
Sedimentary rocks are formed at the bottom of lakes after being compressed over a long period of time...
Sedimentary rocks are formed mainly through a proccess called Diagnesis. Diagnesis can be defined as the combined process of gradual and contineous accumulation, stratification, compactation, sedimentation, cementation, and lithification of transported and deposited debrises, detrituses, regoliths and other earths disintegrated materials, to form sedimentary rocks over a long period of time. Sedimentary rocks are created or formed out of virtually anything that exists around, which can be moved either by wind, water, glacier or waves and deposited in a specific place over and over again. They are rocks that tends to "germinate" by addition of materials/matter in stratas/layers and then the materials hardens, glues up/cements to themselves and hardens with time.
Sand and other particles are buried, compacted, and cemented together.
How do rocks help explain continental drift?
Rocks are very useful when studying the theory of continental drift. For example, one might find a place in Brazil where the type of rock is the same type of rock in Morocco. Or, you might notice that some geological landforms look like they're shaped in a certain way on the eastern South American coast. You might find the exact opposite shape of rocks or landforms on the western side of Africa. This helps explain that South America was once connected to Africa.
What are Earth's layers in order of the highest to the lowest temperature?
Inner core
Outer core
Mantle
Crust
Hydrosphere
Atmosphere
Has St. Louis experienced any volcanism or seismic activity?
St. Louis has likely felt earthquakes from the New Madrid seismic zone, but there is no volcanic activity for hundreds of miles.
The earth's coolest layer is the ouer layer of earth because as you go more into the center of the earth it gets more heat because it has most of the lava from other hot things like a vlocano.
What are the three characteristics of a material that will affect its angle of repose?
The three characteristics of a material that affect its angle of repose are particle size distribution, shape of particles, and surface roughness of particles. These factors influence how easily the particles can stack and maintain their structure at rest.
The record of an earthquake obtained from a seismic instrument is a?
A seismogram is a record of an earthquake that's obtained from a seismic instrument. It's in the form of a graph.
