Archive for Science

The diversity of location and place that is cause by earth surface distribution which are widely spread and not the same between one place to another. There are three concepts that related onto it, to help you understand it, we need to know about these three, which are pattern, location diversity, and regionalization.

1. Pattern
Natural phenomena are not spread evenly on the surface of the earth form a variety of patterns are depicted on maps in various scales. For example: the world’s climate patterns, the pattern of spread of the mountain-fire, river drainage patterns, patterns of human occupation (farming, farming, trade, industry), settlement patterns, traffic patterns, etc. Read the rest of this entry »

As we discuss in previous articles, the accumulated trash will affect climate change due to Earth’s rising temperatures, better known by the term global warming. As we all know that global warming is caused by an increase in greenhouse gases like water vapor, carbon dioxide (CO2), methane (CH4), and dinitrooxid (N2O). From this pile of garbage would be produced had tons and tons of carbon dioxide (CO2) and methane (CH4). Methane (CH4) can be converted into an energy source that could eventually benefit humans. As for the gas carbon dioxide (CO2), up to now there is no significant utilization.

But the process of change of methane (CH4) into energy still faces obstacles including the lack of prospects in terms of economy, which eventually makes its development is still in place and sometime road going forward. As a result of methane (CH4) produced from waste piles can only be left alone without being able to float to the air.
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Both plate boundaries and plates move over time. As previously described, plates can change the locations of trenches and subduction zones, as well as the positions of midoceanic ridges and transform faults . For example, subduction at a convergent boundary can stop in one location and begin nearby in another. Plates can become larger or smaller over time depending on the generation rates of new crust at spreading centers and the rates of subduction.

Convection currents. Some geologists favor convection currents in the mantle as the best explanation for plate tectonic movement. It is reasonable to assume that the heat radiated from the core creates convection currents in the mantle, and the mantle rocks begin to move plastically.
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The earth is surrounded by a magnetic field . Magnetic lines of force originate from north and south magnetic poles, which are about 11 .5 degrees away from the geographic North and South Poles. The magnetic field is strongest at the magnetic poles. The positions of the magnetic poles have changed over time and appear to be rotating around the geographic poles on
an axis tilted from the geographic axis by 11 .5 degrees . The magnetic field traps high-energy particles created by the sun’s ultraviolet radiation, thus protecting our environment on Earth.

The magnetic field is thought to be generated by the liquid outer core. If this liquid material is metallic, as geophysical studies suggest, its flow as a result of heat convection would create an electric current Electric currents induce magnetic fields.
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Both extrusive and intrusive igneous rocks are derived from magmas. The temperature and pressure conditions in the crust and upper mantle influence the melting temperatures of the minerals in the rocks .

Temperature and pressure increase with depth from the surface and eventually reach a point at which rocks melt . The geothermal gradient is the rate at which temperature increases with depth. In the upper crust, the geothermal gradient is about 2 .5 degrees centigrade for every 100 meters (330 feet).
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