Earth science and its branches
Earth Science or Geoscience, is know as the branch of science relating to the study of the origin, phenomena and structure around the planet Earth. Besides, it is also a specific case in planetary science because the Earth is the only considered life-bearing planet. In general, the 4 basic branches of Earth Science will consist of:
- Geology – the study of the Earth
- Oceanography – the study of the ocean
Earth Science and its role in life
- Meteorology – the study of the atmosphere, climate and weather
- Astronomy – the study of the universe
It is believed that these Earth Science branches will make use of various science disciplines such as geography, geodesy, geophysics, chemistry, physics, mathematics, chronology, biology, environmental science, climatology, biogeology, ecology, geomatics, soil science, geochemistry, geomorphology, natural disasters, weather, hydrology and global warming in order to build the quantitative and clear understanding of the Earth system.
Some interesting facts about the planet Earth
In fact, the Earth was formed about 4.5 billion years ago. Since the olden times, there have been several myths and theories relevant to the shape of the Earth. Up to now, our planet has been still full of various exciting secrets. With the assistance of the science and some advanced technologies, it has been likely to dig deep into the facts associated with our planet.
- It is supposed that the Earth has
Planet Earth and its fascinating facts
resulted from the collisions which happened in a vast cloud of gas. After that, in due course of time, dust, gases and different other particles combined to form the solid masses with the name “Asteroids” and “Planetesimals”. On the collision and accretion, these factors and objects would form the entire Solar System.
- With the shape of an oblate sphere, the Earth is known as the 5th largest planet in the entire Solar System.
- 70% of the Earth’s surface has been covered by the oceans.
- It will take approximately 23 hours, 56 minutes as well as 4.091 seconds for the Earth to rotate around its axis. As a result, on an average, the Earth will take about 24 hours to complete its full rotation.
- The Earth has 4 layers including the crust, the mantle, the inner core and the outer core. While the outer core and mantle are considered to be in the semi-fluid state while the inner core and crust are described to in the solid state. The crust and upper mantle can form the lithosphere.