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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

What can you do to save us from a Tsunami?

Well right before a Tsunami all the water pulls back to come crashing on you. This process happens very slowly. My advice is to run away then that's all you can do or die. If your an adult you have a slim chance of surviving, however if you are a kid you have no chance you will die, if u just stand and watch. If you get in your car and go you might survive.

What is the melting point of biotite?

The melting point of biotite is around 700-800 degrees Celsius. At this temperature, biotite undergoes thermal decomposition and breaks down into other minerals.

How is a seismic wave sensed?

seismic waves are sensed with these special technology monitors that have the power of bats . bats cant see but when there going towards something they feel vibrations then they know were there going

Which elements are macromolecules based on?

Macromolecules are based on carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur or phosphorus. These elements are essential for forming the complex structures found in proteins, nucleic acids, carbohydrates, and lipids.

Which minerals crystallize out of ground water that has been heated by magma?

Minerals such as quartz, calcite, and pyrite can crystallize out of ground water that has been heated by magma. These minerals form as the water cools and the dissolved minerals in the water precipitate out and form solid crystals.

Who are involved in exploration for oil and gas?

Oil and gas exploration typically involves a collaboration between geologists, geophysicists, engineers, and land acquisition specialists. These professionals work together to analyze geological data, conduct seismic surveys, and identify potential drilling locations to discover and extract oil and gas reserves. Additionally, companies in the energy industry, government agencies, and environmental consultants may also be involved in various aspects of oil and gas exploration.

What layer of the Earth storage place for magma?

Magma is stored in the mantle layer of the Earth, which is located between the crust and the outer core. Magma is formed in the mantle due to the high temperatures and pressures present in this layer. When magma rises towards the Earth's surface, it can lead to volcanic eruptions.

Where on earth are red earth minerals found?

Red Earth minerals are found in various regions around the world, including Australia, South Africa, parts of the United States, and Brazil. These minerals are typically formed from iron-rich rock weathering, which gives them their distinctive red color.

What is known as a seismic sea wave?

A seismic sea wave is commonly known as a tsunami. It is a series of ocean waves generated by a sudden displacement of the ocean floor, typically caused by an underwater earthquake, volcanic eruption, or landslide. Tsunamis can travel long distances across the ocean and cause widespread destruction when they reach land.

Why do I need reference material in research?

When you asked your question, you asked a reference question. You are asking me for information. That is a reference question requesting information from me. I am your reference material to answer this particular question.

For other types of research, you need different types of reference material. If you are doing research on how to find or make something, a good reference can show you how others have done the same thing and problems they have run across in the past. Using such material is called avoiding "Reinventing the wheel."

If you are doing original research, you need to know what others have done in a similar vein. That way you can show why what you are doing is original.

What element has the greatest effect on magma characteristics?

The silica content in magma has the greatest effect on its characteristics. High silica content makes magma more viscous and results in explosive volcanic eruptions, while low silica content produces runny magma and less explosive eruptions.

What tectonic plate pushes against the Eurasian plate to form the alps and other geographical features?

The African plate pushes against the Eurasian plate, resulting in the formation of the Alps and other geographical features in the region. This tectonic collision has been instrumental in shaping the landscape of Europe over millions of years.

Why is an earthquake more dangerous at night than day?

An earthquake can be more dangerous at night because it may be harder to navigate and access emergency services in the dark. Additionally, power outages caused by earthquakes can leave people without electricity, making it difficult to communicate or receive help. The darkness can also increase fear and anxiety, amplifying the psychological impact of the earthquake.

The theory of continental drift was given a scientific status during the?

Theory of continental drift was given scientific status during the early 20th century, particularly in the 1960s with the development of the theory of plate tectonics. This theory provided a comprehensive explanation for the movement of Earth's continents over time.

What is the difference in degrees between True North and Magnetic NOrth on the topographic map?

It varies with where you are on the earth. It all has to do with your geographic position (lat/lon) and also the magnetic activity of the area. You can acquire a USGS topographical map and it will have the magnetic variation for the area shown.

Does the earth actually tilt?

The way heat by energy reflects off of earth because of the angle at which it hits- apex

Why is magma that contains little silica less likely to erupt explosively?

Magma with low silica content is less viscous, allowing gas bubbles to escape more easily, reducing pressure buildup that leads to explosive eruptions. In contrast, high-silica magma is more viscous, trapping gas bubbles, which can lead to explosive eruptions when pressure is released suddenly.

Who interdouced the theory of cintinental drift?

The theory of continental drift was introduced by German meteorologist Alfred Wegener in 1912. He proposed that the continents were once joined together in a single landmass called Pangea and have since drifted apart to their current positions.

What does it mean when magma freezes?

When magma freezes, it solidifies into igneous rock. This process can result in the formation of different types of igneous rocks, such as basalt, granite, or obsidian, depending on the composition and cooling rate of the magma.

How did fossils provide evediance for continental drift?

Fossils found on different continents, such as identical species of plants or animals separated by vast oceans, provide evidence for continental drift. Scientists have observed similarities in the fossil record on continents that were once connected, suggesting they were once part of the same landmass before drifting apart.

How did Wigner use the island of Spitsbergen to support the theory of continental drift?

First of all it is Wegener, Alfred Lothar Wegener to be percised. He was a german scientist who had the hypothesis for continental drift. His hypothesis got rejected by other scientist because it interferred with their ideas on how mountains form.Wegener used Spitsbergen to support his evidence for continental drift because Spitsbergen is now a snowy reigon and geoigists had found fossils of tropical plants.Tropical plants cannot grow in a snowy reigon.

What two aspects of Wegener's continental drift hypothesis did most Earth scientists object?

The two aspects of Weneger's continental drift hypothesis were objectionable to most Earth Scientist were. One, that gravitational forces of the moon and sun cause the earth's tides and also the movement of continents across the globe. Also, that larger and sturdier continents broke through thinner oceanic crust.

Not 100% sure, but thats what my book says.

How are convection currents set up in air?

Convection currents in air are set up by the unequal heating of the Earth's surface. When a portion of the Earth's surface is heated more than another, the warm air rises, creating a low-pressure area. Cooler air then moves in to fill the void, creating a convection current.

How do the shaded areas on the map give evidence for continental drift?

The shaded areas on the map might show matching geological features and rock formations on different continents, indicating they were once connected, supporting the theory of continental drift. Additionally, they may demonstrate similar fossil evidence found in separated land masses, suggesting a shared history. Magnetic striping patterns on the seafloor shown in shaded areas could also point to the movement of continents over time.

What is the angular velocity of the diurnal cycle?

The earth completes one axial rotation every 23hours 56minutes 4seconds. (rounded)

Just to reduce our sweat without affecting the answer by much, let's call it 24 hours.

We can massage it to yield:

1 rev per day = 15 degrees per hour = 0.25 degree per minute

= 2 pi radians / 24 hours = pi radians per 12 hours

= 0.2618 radian per hour

= 4.363 milliradians per minute