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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 are the 3 forms of heat?

The three forms of heat transfer are conduction, convection, and radiation. Conduction is the transfer of heat through a material without any movement of the material itself. Convection is the transfer of heat through the movement of fluids or gases. Radiation is the transfer of heat through electromagnetic waves.

What was pengea?

"Pengea" was a hypothetical supercontinent proposed by scientists that existed around 335-175 million years ago. It is believed to have formed before the breakup of Pangaea, and it was located in the Southern Hemisphere. Pengea's existence helps explain certain geological features found on different continents today.

How many times thicker is the mesosphere than the troposphere?

The mesosphere is about 10 times thicker than the troposphere. The mesosphere extends from about 50 km to 85 km above the Earth's surface, while the troposphere is the lowest layer, reaching up to about 12 km.

What is a glacial till?

Glacial till is a type of sediment deposited by glaciers through the process of erosion and transportation. It is a mixture of different sized particles, ranging from clay to boulders, that is left behind as the glacier melts. Glacial till is an unsorted and unstratified deposit.

What is the inner core's temperature?

The inner core's temperature is estimated to be around 5,700 degrees Celsius (10,300 degrees Fahrenheit). This extreme heat is due to the high pressure at the center of the Earth compressing the iron and nickel in the core, causing it to reach such high temperatures.

Why does continental drift occur?

Continental drift occurs due to the movement of tectonic plates on the Earth's surface. These plates float on the semi-fluid asthenosphere below and are driven by forces such as mantle convection. As the plates move, continents drift apart or come together, leading to various geological phenomena like the formation of mountains and ocean basins.

What type of geyser is steamboat geyser?

Steamboat Geyser is a fountain geyser, known for its powerful and tall eruptions that can reach over 300 feet in height. It is the world's tallest currently active geyser, located in the Norris Geyser Basin of Yellowstone National Park.

What are biotic features of the environment?

The Biotic Fetures of an environment are the living things such as plants and other organisms.

The Biotic Fetures of an environment are the living things such as plants and other organisms.

How do you produce artificial seismic waves?

by using the dynamite or other energy sources which produce vibration in the earth, we can produce seismic waves.

answered by geologist M Tariq Niaz AJK University Muzaffarabad, Pakistan

How many tundras are there?

There are several tundras all around the world, including the Arctic, Russia, America and Asia.

What are two examples of plasma?

Artificial plasmas include:

  • The electrified gas in a fluorescent light
  • The electrified gas in a plasma ball
  • Fusion plasma
  • Laser plasmas


Naturally occurring plasmas include:

Terrestrial

  • fire
  • the aurora
  • lightning
  • the ionosphere (part of the Earth's plasmasphere)

Space plasmas include

  • The matter making up the Sun and stars
  • The interplanetary medium (Solar Wind)
  • The interstellar medium (space between the stars)
  • The Intergalactic medium (space between galaxies)

For more information, see:
http://www.plasma-universe.com/

Who came up with continental drift?

Alfred Wegner made the theory of continental drift and he proved his theory was right and he was right because back then the seven continents were were like one big continent until Wegner new that the continents were drifting apart. He had prove and his prove was that the seven continent were like a jigsaw puzzle, and that the remains of crocodiles and other rare animals were found in America and Africa.

Although it has to be said it doesnt take a genius to note the continents were once joined judging by their shape, and that children have been noting this for years CHILDREN!

What is an exotic river?

a river that flows through the desert

and is in places like Saudi Arabia and in the other countries around it.

Exitic Rivers are the Tigris and Euphrates Rivers. They flow across the plain North of the Arabian peninsula, which stretches from the Persian gulf into northern Iraq.

What is human eaters?

"Human eaters" refers to individuals or beings that consume human flesh. This can be seen in some folklores, myths, or horror stories where creatures like vampires, cannibals, or zombies are portrayed as feeding on humans. It is not a common or accepted practice in any culture or society.

How can people adapt to live near the mesa?

People can adapt to living near a mesa by being mindful of the risk of rockfalls or landslides, taking measures to protect their property from erosion, utilizing water conservation techniques, and respecting the natural environment to preserve its unique beauty and ecosystem.

Is the core of the earth made of water or molten lava or solid and liquid metal or dense vegetation?

It is widely known that the core is made of molten iron and nickel, and of course this is true, and at temperatures of 5000 decrees centigrade I doubt that anything could grow at such temperatures. But as the 2008 movie Journey to The Centre of The Earth, three adventurers stumble onto a chamber within the earth, and this chamber has a large amount of vegetation in it. I'm guessing the temperature in here reaches a maximum of 200 degrees Fahrenheit.

What phase of matter has the greastest density for most substances?

Solids are the densest state of matter for most substances. The variation of density for solids is typically very small.

How have internal forces changed the surface of the earth?

The heat from the interior of the Earth causes plate tectonics, which in turn create mountains, volcanoes, rift valleys, and most of the other surface features we see. Those features caused by erosion are also caused by the protective effects of the magnetosphere, shielding us from the sun's harmful radiation and allowing us to have an atmosphere with life giving weather.

The asthenosphere lies entirely within the?

The asthenosphere lies entirely within the upper mantle of the Earth. It is a semi-fluid layer located beneath the lithosphere, extending to depths of about 200 km to 700 km. The asthenosphere is responsible for the movement of tectonic plates due to its semi-plastic nature.

What metallic element is the most aboundant on earth what of the earth's crust dose it make up?

Aluminum is the Earths most abundant metal and its located in the Earths outer crust.
One of the properties of crust is that it consists of a variety of sedimentary,metamorphic and igneous rocks.

What is gravity survey?

If the earth had a completely smooth surface and all the components form which it was made were all evenly mixed up, then the force of gravity would be the same at all points on its surface.

However the earth is not smooth , it has mountains and hollows in its surface and the rocks form which it is made are not evenly mixed, some surface rocks are heavy (dense) and some are light.

This means that as compared to the theoretical smooth earth gravity field, the real earth gravity field varies from point to point over the surface.

A gravity survey measures the small variations in the pull of gravity over the earth's surface and makes a map of these changes. This map helps geologists understand where the dense and light rocks are beneath the surface.

What type of factors are sunlight air minerals and water?

Sunlight, air, minerals, and water are environmental factors essential for the growth and survival of plants. Sunlight provides energy for photosynthesis, air supplies carbon dioxide for the process, minerals are necessary for plant metabolism, and water is vital for various biochemical reactions and maintaining turgidity. Together, these factors support plant growth, development, and overall health.

Where is water found in all three states throughout the solar system?

Water can be found in all three states throughout the solar system. It exists as solid ice on planets like Mars and some moons of the outer planets, as liquid water on Earth and potentially beneath the surface of some moons like Europa, and as water vapor in the atmospheres of various planets and moons.