Geophysics

Arthur Holmes was a strong advocate of Alfred Wegener's theory of continental drift at a time when it was considered very controversial as there was no known mechanism which could allow this to occur.

Holmes proposed that there was mantle convection allowing dissipation of heat from the core and that these convection cells could be a driving force of continental drift. This theory was ultimately incorporated into the modern understanding of sea floor spreading that occurs at mid-ocean-ridges.

Some arguments against Wagner's theory of continental drift included the lack of a plausible mechanism to explain how continents could move, the belief that the Earth's crust was too strong to allow for such movement, and skepticism about the idea that the continents could fit together like pieces of a puzzle.

Technically you just need one, but the more there are, the easier it is to locate the epicenter of the earthquake.

The reason for this is that based on the timing of each of the three seismic waves that reach the station, the station can calculate a radius all around the station. So picture a circle with what the radius is around the station, another station will do the same thing, and there HAS TO BE an intersection of these circles somewhere, so that narrows down the location of the epicenter.

Hope this makes sense.

no they are nnot invisible they are visiuble because the y just arel o

No, silt and potting soil are not the same. Silt is a sediment that falls between sand and clay in terms of particle size, while potting soil is a mixture of organic matter and other ingredients like peat moss, perlite, and vermiculite used for growing plants in containers.

Christian Doppler is best known for his discovery of the Doppler effect, which describes the change in frequency of a wave for an observer moving relative to its source. This effect is widely used in various fields, such as astronomy and medical imaging, to understand motion and velocity. Doppler's work laid the foundation for understanding how sound and light waves can be affected by relative motion.

Continental drift, driven by the movement of tectonic plates beneath Earth's surface, causes continents to slowly shift positions over millions of years. The plates are carried by underlying convection currents in the mantle, leading to the movement of the continents on the Earth's surface. This process has shaped the Earth's geology and continues to influence the planet's landmasses.

Leeds is primarily made up of sedimentary rock formations, such as sandstone and shale. These types of rocks were formed over millions of years from the consolidation of sediments deposited in ancient environments like rivers, lakes, and seas.

Wegener's hypothesis of continental drift proposed that continents were once joined together in a single landmass called Pangaea and have since drifted apart over time. This theory laid the foundation for the modern theory of plate tectonics, which explains the movement of Earth's lithosphere.

Although it seemed to make a lot of sense, there was no known proof of HOW the continents would drift. It wasn't until years later that we gained knowledge of plate tectonics, which bolstered Wegener's hypothesis.

because of the growing of indigo and cotton. And the British was selling it for a high price and the Indians were forced to buy the things which were coming from the britain. So the Indian leaders formed a congress and this let for the REVOLT OF 1857.

Estuaries provide a mix of saltwater and freshwater, creating a dynamic and diverse habitat that supports a wide variety of fish species. The sheltered waters of estuaries offer protection for fish eggs and larvae from predators and strong currents. Additionally, the rich nutrient content in estuaries supports abundant food sources for developing fish.

Yes, fossils are evidence of continental drift because similar fossils have been found on different continents that are now far apart. This suggests that these continents were once connected, supporting the theory of continental drift.

A cooler denser fluid in soup will sink to the bottom of the pan due to convection currents. As it heats up and becomes less dense, it will rise to the top, creating a circulating pattern that helps distribute heat evenly in the soup.

Lack of fertile soil can be a problem for farmers because it can lead to poor crop yields and lower-quality produce. Without the necessary nutrients in the soil, plants may not be able to grow properly or reach their full potential. This can impact the farmer's income and overall productivity.

In the 1960s, scientific evidence from studies of paleomagnetism, seismic activity, and ocean floor mapping supported the occurrence of continental drift. This evidence provided crucial support for the theory of plate tectonics, which explains how the Earth's continents move and interact on the surface.

Mass wasting refers to the downslope movement of rock, soil, and debris under the influence of gravity. Examples of mass wasting include landslides, rockfalls, debris flows, and slumps. These movements can occur due to various factors such as heavy rainfall, earthquakes, volcanic eruptions, or human activities.

no

Venus has a surface temperature close to this.

Venus has a surface temperature close to this.

Venus has a surface temperature close to this.

Venus has a surface temperature close to this.

Earth's tilt is also known as its axial tilt. It refers to the angle at which the Earth's axis is tilted in relation to its orbit around the Sun.

At least three seismic stations are needed to locate an earthquake's epicenter using the triangulation method. By measuring the time it takes for seismic waves to reach each station, scientists can pinpoint the epicenter where the three circles intersect.

Fossils found on different continents that were once connected provide evidence of continental drift because they show similarities between species that lived in the same geographic region. By studying these fossils, scientists can track the movement of continents over time and piece together the history of Earth's land masses.

The area of Our one and only Earth that is frozen is It's Cryosphere; it represents just a portion of Earth's Geosphere, and as such is affected by any changes that occur within the Geosphere.

The presence of glossopteris fossils in regions that are now widely separated provided evidence for continental drift. This plant species was found in South America, Africa, India, Antarctica, and Australia, suggesting that these landmasses were once part of a single supercontinent. The distribution of glossopteris fossils supported the theory of continental drift proposed by Alfred Wegener.

a. 1968

b. McKenzie's theory is that the lithosphere is divided into a few dozen plates that move across the earth's surface relative to each other

c. Evidence: . He wondered since he was young what happened to the the Continents and how they fit together like a puzzle.