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.

500 Questions

What is the scale to measure earthquakes called?

User Avatar

Asked by Wiki User

M=log _{10}A-log _{10}A{0}} or

M = log-{10}A/A{0}

where A is the maximum excursion of the Wood-Anderson seismograph, the empirical function A0 depends only on the epicentral distance of the station,

1.0–1.9 Micro I Microearthquakes, not felt. Recorded by seismographs.[1 Continual/several million per year

2.0–2.9 Minor I Felt slightly by some people. No damage to buildings. Over one million per year

3.0–3.9 Slight II to III Often felt by people, but very rarely causes damage. Shaking of indoor objects can be noticeable. Over 100,000 per year

4.0–4.9 Light IV to V Noticeable shaking of indoor objects and rattling noises. Felt by most people in the affected area. Slightly felt outside. Generally causes zero to minimal damage. Moderate to significant damage is very unlikely. Some objects may fall off shelves or be knocked over. 10,000 to 15,000 per year

5.0–5.9 Moderate VI to VII Can cause damage of varying severity to poorly constructed buildings. Zero to slight damage to all other buildings. Felt by everyone. 1,000 to 1,500 per year

6.0–6.9 Strong VII to IX Damage to a moderate number of well-built structures in populated areas. Earthquake-resistant structures survive with slight to moderate damage. Poorly designed structures receive moderate to severe damage. Felt in wider areas; up to hundreds of kilometers from the epicenter. Strong to violent shaking in the epicentral area. 100 to 150 per year

7.0–7.9 Major VIII or higher Causes damage to most buildings, some to partially or completely collapse or receive severe damage. Well-designed structures are likely to receive damage. Felt across great distances with major damage mostly limited to 250 km from the epicenter. 10 to 20 per year

8.0–8.9 Great Major damage to buildings, and structures likely to be destroyed. Will cause moderate to heavy damage to sturdy or earthquake-resistant buildings. Damaging in large areas. Felt in extremely large regions. One per year

9.0–9.9 Extreme Near total destruction – severe damage or collapse to all buildings. Heavy damage and shaking extend to distant locations. Permanent changes in ground topography.

Hope that helps!!!!

What consists of all earth's water?

User Avatar

Asked by Wiki User

All the water on Earth comprises the hydrosphere, which includes water in the form of rivers, lakes, reservoirs, groundwater, and glaciers. It also includes water vapor in the atmosphere and water in living organisms. The hydrosphere is vital for supporting life on Earth and plays a crucial role in regulating the planet's climate.

Where can frozen water be found on earth?

User Avatar

Asked by Wiki User

Frozen water can be found in various places on Earth, including polar ice caps, glaciers, and icebergs. It can also be found in the form of frozen lakes, rivers, and ponds in colder regions during winter months. Additionally, frozen water can be found in snowfall and in frozen layers within the soil, known as permafrost, in certain regions.

Is it true that a hot spring is hot water and steam that erupts from the ground?

User Avatar

Asked by Wiki User

Yes, that is correct. A hot spring is a natural occurrence where groundwater is heated by geothermal activity, usually volcanic, and emerges at the Earth's surface. The heat can cause the water to reach high temperatures and create steam.

What Best Describes longitudinal Waves?

User Avatar

Asked by Wiki User

Imagine a long spring or slinky (the toy). Now if you give a jerk to the spring from one side, while keeping the other end fixed, you will be able to see a compressions travelling from your end to the fixed end of the spring. Congrats, you just saw a longitudinal wave!

What is the fastest of the seismic waves?

User Avatar

Asked by Wiki User

p waves aka primary waves

What is the outer core of the earth made out of?

User Avatar

Asked by Wiki User

Earth's outer core is substantially molten iron, along with molten nickel and some trace elements.
The outer core is made of molten rocks and metal so hot that they glow. Their temperature is 4,300 K

(4,030 °C or 7,280 °F) in the outer regions and 6,000 K (5,730 °C; 10,340 °F) nearer the inner core.

Why does the Serbia exist?

User Avatar

Asked by Wiki User

It has rich history, but at the moment living in Serbia is not great.

Where does most seismic activity occur?

User Avatar

Asked by Wiki User

Most seismic activities are associated with areas of active tectonism. So earthquakes occurs principally in such areas.

What type of plate boundary is Italy on?

User Avatar

Asked by Wiki User

It is found on a destructive plate boundary

Where is the Mackenzie River?

User Avatar

Asked by Wiki User

About 1825 km/1120 miles long

What causes mass wasting?

User Avatar

Asked by Wiki User

Mass wasting is caused when there are loose rocks and soil on a mountain, then somthing moves it. Then it all falls down the mountain causing a landslide.

Denver Simmons

How can you put the word mass wasting in a sentence?

User Avatar

Asked by Wiki User

Mass wasting is hazardous and could kill you.

Whose idea was the continental drift?

User Avatar

Asked by Wiki User

I do, looking at the map it does look like a puzzle and all the continents look like they connect or used to connect.

What are the driving forces of continental drift?

User Avatar

Asked by Wiki User

The driving Forces of Continental drift are both gravity and the motion of the underground Tectonic Plates.

Why does the inner core remain solid even though the temperature is hot enough to melt the metal?

User Avatar

Asked by Wiki User

The pressure (due to gravity) in the center of the Earth is so great, that it compresses the otherwise molten metal alloy - to a solid.

Cost of damage in Kobe earthquake?

User Avatar

Asked by Wiki User

The cost of the repairs for Kobe after the earthquake was at least 160 billion yen.

In what direction do tectonic plates go?

User Avatar

Asked by Wiki User

Tectonic plates move from east to west as a whole due to the coreolis (not sure of spelling) effect.

What are two ways that nitrogen fixation can take place?

User Avatar

Asked by Wiki User

Lightning strikes and special bacteria that grow on plant roots.

What is a record of an earthquake's seismic waves on paper?

User Avatar

Asked by Wiki User

"Shake, Rattle, and Roll".

But seriously folks, it's called a "seismogram".

What is the term that refers to the strength of earthquakes as measured by seismic waves and movement along faults?

User Avatar

Asked by Wiki User

The term for the instrument that measures the seismic waves of earthquakes along faults or tectonic plates is known as a seismograph. These machines measure the force given off by the trembling of the ground due to the force of an earthquake. The strength is measured as magnitude on the "Richter scale" which is a logarithmic quantity. For example, the motion generated by a quake of magnitude 5 on the Richter scale is 10 times as large as that generated by a quake of magnitude 4.

What is a seismic travel time curve?

User Avatar

Asked by Wiki User

A seismic travel time curve describes the relation between the travel time of a seismic wave and the epicentral distance. It is used to calculate the calculate the distance of the earthquake's epicenter from the seismograph.

Why does the continental drift occur?

User Avatar

Asked by Wiki User

this occurs because tectonic plates are under the continents which causes the continents to move

How can be determined the earthquake epicenter from seismic waves?

User Avatar

Asked by Wiki User

The simplified answer is that it works much in the same way you would determine the source of a sound (which is also in waves). Multiple measurements of the intensity are taken from different locations are used to triangulate an earthquake.