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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

Why is earths inner core solid?

Earth's core is a solid made up of mainly iron and other metals. Even though temperatures

here reach sometimes 5000-7000 degree Celsius but pressure is extremely high. Due to this high pressure, the metals remain solid even though temperatures exceed their melting points.

Examples of heat sources?

Examples of heat sources could be grouped into two (2) based on there origin. They are;

1. Natural Heat Sources.

The natural heat sources could be sub-divided into two;

a. External Source, e.g Sun.

b. Internal Source, e.g Geothermal, i.e. Magma.

2. Man-made Heat Sources.

These includes heat generated from;

a. Electricity, e.g Electric Cooker and Oven.

b. Fire, e.g Coal.

Do plants need to transpire to live?

Yes, plants need to transpire in order to survive. Transpiration helps in regulating the temperature of the plant, moving nutrients from the soil to the leaves, and maintaining the turgidity of the plant cells by drawing in water.

How hot is the crust of the earth?

The crust is the cool part of the Earth. It is the surface we live on. It should be at a comfortable temperature until it reaches down to the mantle, the next layer. That area will be hotter. Then at the center, is the core. That is the hot part of the Earth's interior. It is about 3500° C. Estimates vary from 2000 to 7000, but it is HOT!
About 447 in Fahrenheit

Which planet has vertical rings?

You may be referring to Uranus. It doesn't really have a vertical ring. It's just that its axis is inclined to the plane of its orbit by almost 90 degrees. So it rotates top-to-bottom. So its ring is vertical.

How do air masses of different pressures and temperatures move around?

Air masses of different pressures and temperature move around the Earth. The cold air masses that form at the poles move toward the equator, while the warm air masses that form at the equator move toward the poles.

How many additional electrons is an oxygen atom able to attract?

An oxygen atom is able to attract 2 additional electrons to complete its valence shell and achieve a stable octet configuration. This is because oxygen has 6 valence electrons and needs a total of 8 electrons for stability.

What is the biome of Madrid?

Madrid is located in the Mediterranean biome, characterized by hot, dry summers and mild, wet winters. This biome supports a variety of vegetation such as oak and pine forests, as well as shrublands and grasslands. The region's flora and fauna have adapted to withstand the dry conditions during the summer months.

What are loose rock fragments?

Loose rock fragments can be caused by weathering, or indeed erosion. They can be found in a scree slope, and alluvial fan, a beach, in the soil (they are the soil, sometimes).

Loose rock fragments are known to a geologist as 'Unconsolidated sediment' which can be classified into various groups. Consider alluvium; the deposit from a river.

How is Sio2 made?

Silicon dioxide (SiO2) is commonly made by reacting silicon with oxygen, typically through a high-temperature process such as silicon oxidation or hydrolysis of silicon compounds. This can occur naturally through the weathering of rocks containing silicon or be synthetically produced in industries using various chemical reactions.

What are the types of topology?

whatarethetypeoftopology

Network topology is a layout which shows that how a connectivity communicates and the flow takes place in a network. types of topology are 1. BUS topology,2. Star topology,3. ring topology.

What are seismic P-waves?

A pressure, or a compressional, wave in which a disturbance vibrates materials back and forth in the same direction as the direction of wave movement.

P-waves are also called primary waves, they are a kind of vibration in the Earth's crust, that result from fault movements that cause earthquakes.

The P wave is a longitudinal wave or a compressionwave. The force is applied in the direction that the wave is travelling. The ground must move in that direction. Ground or earth is pretty incompressible, so the energy is transferred pretty quickly.

How hot is the crust?

The crust is the cool part of the Earth. It is the surface we live on. It should be at a comfortable temperature until it reaches down to the mantle, the next layer. That area will be hotter. Then at the center, is the core. That is the hot part of the Earth's interior. It is about 3500° C. Estimates vary from 2000 to 7000, but it is HOT!

How does erosion cause fire?

Erosion does not cause fire directly. Instead, erosion can increase the risk of fires by destabilizing terrain, which can lead to vegetation loss, soil exposure, and the accumulation of flammable materials. These factors can make an area more susceptible to ignition and rapid fire spread.

What is the 2nd most abundant element in the earth's crust?

Silicon is a rather curious element, surpassed only by oxygen for the most abundant element to be found in the crust. Silicon's modern uses include mainly different types of electronics, such as solid-state drives.

What is a seismic trace?

A seismic trace is a graphical representation of seismic data collected during seismic surveying. It shows how the amplitude of seismic waves changes over time and can be used to identify subsurface structures like rock layers or hydrocarbon reservoirs. Seismic traces are essential in geophysics for interpreting subsurface geology.

Is the Earth made from rock?

The solid mineral aggregates that form the Earth's crust are rock. The plastic like mantle is formed of superheated and partially molten rock. The liquid outer core and the solid inner core are substantially formed of the element iron, along with nickel and some other elements.

How far does a stream of water have to run before it is purified?

The distance a stream of water needs to run to be purified depends on various factors such as water flow rate, turbulence, and presence of contaminants. Generally, a stream of water may begin to be purified after traveling a considerable distance, typically a few kilometers, as natural processes like sedimentation, filtration, and microbial activity can help to cleanse the water. However, to ensure complete purification, additional treatment methods may be necessary.

Seismic data processing?

To improve the signal to noise ratio

• Isolation of the wanted signals

(Reflections isolated from multiples and surface

waves)

• To obtain a higher resolution by adapting the

waveform of the signals

• To obtain a realistic image by geometrical

correction

• To obtain information about the subsurface

if you need more , please contact me.

What are two things that make geothrmal energy beneficial?

Geothermal energy is sustainable and renewable, as it harnesses the heat stored within the Earth's crust. It also has a low environmental impact compared to fossil fuels, emitting minimal greenhouse gases and pollutants.

How long will it take 120 degree water to burn an elderly persons skin?

According to medical research, setting a water heater to 120 degrees will prevent hot water burns. Higher settings, such as 140 degrees, can cause a serious burn in as little as 10 seconds, especially to elderly people and yo very young children.

What are the types of tides?

The two main types of tides are spring tides and neap tides. Spring tides occur when the sun, moon, and Earth are aligned, resulting in higher high tides and lower low tides. Neap tides occur when the sun and moon are at right angles to each other, resulting in less extreme tidal variations.

How can an electric light bulb transfer heat in covection radiation and conduction?

Conduction: Heat travels via Metal parts on Bulb Convection Current: Hot air around bulb rises and cool air replaces it thus heat from bulb will consistantly warm up cool air around it. Radiation: Bulb is bright and shiny, thus emits infra red radiation. These are my opinion and they are not model answers. Mr Lin. from Singapore zillusia100 a.t. yahoo point com point sg