Essays on Earth Science

Description of a Land Surveyor Surveyors find exact measurements to find a properties boundary. They provide data relevant to the size, shape, and contour of the Earth’s surface for mapmaking, engineering and construction projects. Making measurements and determining a properties boundaries. Providing data relevant to...

Parts of an Earthquake?-Earthquakes happen when two pieces of Earth all of the sudden slip past each other. The surfaces that slip past each other are called fault line or fault plane. An earthquake starts in the hypocenter, which is located beneath Earth’s surface. Right...

The beauty and vastness of outer space serve as a beacon for man’s desire to expand continuously, to transcend all of the boundaries that obstruct his desire to be unrestricted in every direction. Mankind is engaged in an eternal striving for more knowledge, and outer...

Challenges for the Solar Eclipse First of all, the solar eclipse is necessary that the sun, the earth and the moon located in the right configuration. Compared with the sun, the size of the moon is quite small. This means that the only possible way...

A Short porosity of Ethiopian Opal, precious opal mined in Ethiopia entered the gem and jewelry market in 1994. This opal is originated from a discovery made in the Menz Gishe District in the northern part of the Shewa State. Opals from this area occur...

Carbon in its various forms has been known since ancient times in the form of soot, charcoal, graphite and diamonds. Its name is derived from a Latin word “carbo” which means “charcoal”. Ancient cultures did not realize, of course, that these substances were different forms...

What is an earthquake? An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane. The location below the earth’s surface where the earthquake starts is called the...

Turtles survived dinosaurs and have roamed the Earth for more than 200 million years. But today, these long-lived reptiles are among the most endangered animals on Earth, ahead of birds, mammals, fish or even amphibians.The destruction of their habitat, the overexploitation of these animals as...

Earth’s magnetic field, albeit generated approximately 2,000 miles below the surface, protects the planet’s atmosphere from space radiation and solar wind. It is essential, then, for life. The strength of the magnetic field, though, is rapidly decreasing; in the past 300 years alone, its strength...

The drainage pattern of an area depends upon following factors Geological time period of drainage basin. Nature, structure and type of rocks. Slope and topography of that area. Rainfall, amount of flow and periodicity of flow of water. TYPES OF DRAINAGE PATTERN Dendritic the term...

Earth’s Layer The Earth is like a giant layer cake made up of many different layers and different fillings. Except the Earth fillings are not made up of good tasting frosting and cake but more rocks and metal. The Earth is divided into four different...

Magnetism produces lines of force known as flux. These can be detected by compass needle which shows the direction you are travelling as the earth’s magnetic north pole attracts the north ends of other magnets. The magnetic lines of force start from the north pole...

As usual, we began with a quick recap of the topics that were discussed in the last session and quickly moved on to the concept of progress in science. The accumulation of knowledge suggests that science makes progress over time. An example of this could...

An earthquake is when the ground starts shaking caused by a slip on a fault. Stresses in the earth’s outer layer push the sides of the fault together. Stress builds up and the rocks suddenly slip releasing a ton of energy in waves that travel...

As the lecture began I kept in mind the topic of the lecture ”How Science Progresses” as I realized it is a helpful tool while internalizing what is being taught. This lecture continued to build on previous lectures with the nature of scientific inquiry being...

Types of magma Basaltic magma – SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, NaAndesitic magma – SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, KRhyolitic magma – SiO2 65-75%, low in Fe, Mg, Ca, high in K, NaTemperature of magmas...

Islands are one of the Earth’s most interesting features. Islands experience great diversity in their size, age, inhabitants, and origins. Islands either be oceanic when it is a product of volcanism, such as Hawaii, or it could have been connected to a part of a...