answersLogoWhite

0

🧪

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

What is a seismic safe building?

No building is seismic safe. No building is earthquake proof. However, there are steps that can be taken to make buildings more earthquake resistant. Concrete buildings made without rebar will collapse in an earthquake. Concrete buildings and concrete block buildings in Guatemala that hold up in earthquakes are those that use a lot of rebar. It is also important to use metal straps to tie the roof to the walls. The straps are inexpensive, but they maintain the integrity of the building. The roof should have cross pieces.

What is elastic limit in relation to earthquakes?

How far you can bend (or stretch) something before it fails to return to its original shape when released.

What forms where a continental and oceanic plate collide?

Continental Rift - but that assumes they are separating. All of tectonic theory fails to account for erosion and deposition. It is truly half baked theory because the alternative is hydroplate theory and The Flood. Can't entertain notions like that even if the planet makes more sense under that. But its continental rift.

What determines the amount of runoff?

One of the factors that determine whether water infiltrates is the nature of the surface. Another factor that determines is the elevation of the surface or its shape.

How is it possible that the inner core is a solid but its also the hottest layer?

The pressures from surrounding material is so intense that despite the high temperatures, the metals of the inner core cannot melt.

Why are large powerful earthquakes generated at subduction zones?

Subduction zones are locations where crustal plates are being forced down into the mantle below other crustal plates. These movements are not uniform, but instead occur in discrete events. This is because friction causes the plates to lock in position until the stress exceeds the shear strength of the fault zone. This accumulation of stress causes deformations in the rock mass around the locked fault which is suddenly released when the fault slips.

What was the weakness in Alfred Wegener's theory of continental drift?

The theory was dismissed by the scientific community because there was no mechanism to move continents through what was believed to be solid rock.


Here is one of the reasons that the theory was hotly debated when it came out in 1912: Link:


http://www.youtube.com/watch?v=94AiYYgtIEw

How do mudslides kill people?

Mudslides, or mudflows as they are more properly called, can kill people in two ways. First, the sheer force of the mudflow or the debris it carries can crush people. Those less fortunate may be buried may be trapped in the mud once it stops moving. People who are completely buried will suffocate. Worse still, people who are partly buried may die of thirst if rescuers are unable to reach them

Hot melted rock that reaches the surface of the Earth is called what?

If it reaches the surface, it is magma or lava. If it merely intrudes into rocks already formed, it is intrusive. Such as sills and dikes.

Which type of boundaries is seafloor created by?

Seafloor is created at divergent plate boundaries called the mid-ocean ridges.

Where is the aswan high dam located?

The Aswan High Dam is located in Aswan, Egypt. It spans the Nile River and was completed in 1970 to control floods, provide irrigation water, and generate hydroelectric power for the region.

Does an increase in silica increase the viscosity of magma?

Yes. Viscosity is the resistance of a fluid to flowing. A high viscosity means low flowing (I specifically mention this because this is a huge pitfall)

When silica content increases, and when temperature decreases, the viscosity of a magma increases along with it.

Are geysers fresh water?

Yes, geysers typically consist of fresh water that is heated underground by geothermal energy. When the water erupts through the geyser opening, it can sometimes pick up minerals from the surrounding rocks, but it is still considered fresh water.

What are the lightning conductor?

A lightening conductor is a thick copper wire or strip that connects a spike secured onto the tallest point of a building to a long copper earth pole that is hammered deep into the ground at the side of the building.

It protects the building from lightning strikes, by providing an easier path for current to flow to earth than through the building.

In the event of a direct lightning strike, the current in the conductor may be so great as to melt or even vaporize the metal, but the damage to the building will nevertheless be limited.

What is the paleoclimate evidence for continental drift?

There are fossils of animals that can only live in warm whether, that are all around the world, even on Antarctica

Is the oceanic lithosphere denser?

No. Oceanic plates are denser than conitnental plates.

Convection currents within the Earth cause plate tectonics due to the movement of the mantle true or false?

No. Convection currents which could lead to volcanism in the crust occur in the mantle. The crust is too cold and brittle for convection currents to occur.

Whose idea was continental drift?

A scientist by the name of Alfred Wegener proposed this theory about a century ago. It was not well-received at first, but after more and more evidence was discovered, it gradually became more accepted. Today, most scientists consider continental drift, formally known as the theory of plate tectonics, to be the correct explanation.

How many people survive earthquakes each year?

50 people are affected each fricken year 50 people are affected each fricken year

What is inner core made up of?

The inner core is made out of iron and nickel and it is a solid.

How do distinctive rock formations support the theory of continental drift?

The shapes of continents appearing on the map clearly show similar shapes and how the continents might fit together.

What is the definition of bedding plane in geological view?

A bedding plane is the area of separation between rock strata made by a cyclical or situational deposition of sediment. Bedding planes are originally parallel to the horizon, but the strata inclination can be altered by crust moving events.

Is the earth tilted on the equinox?

Yes, but Mercury has almost no tilt (probably less than one degree).