Differentiate endogenous and exogenous forces of earth. Give examples.
What is the focus of earthquake ? How is it different from epicenter.?
How do we measure intensity of earthquake? Name the instrument we use to study seismic waves??
What will be the outcomes of movement of continental plates??
Name some advantages of vulcanoes.
Answers
Answer:
Endogenic forces produce after-effects that are visible only after it causes sudden damage. Exogenic forces create changes visible over a period of thousands or millions of years. Examples: Earthquakes and volcanic eruptions.
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The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
Explanation:
1) Processes caused by forces from within the Earth are endogenous processes. Exo is a prefix meaning "out", and endo is a prefix meaning is in
Endogenic forces or endogenetic forces are the pressure that originates inside the earth, therefore also called internal forces. These internal forces lead to vertical and horizontal movements and result in subsidence, land upliftment, volcanism, faulting, folding, earthquakes,
2) The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
3) A seismograph is the primary earthquake measuring instrument. The seismograph produces a digital graphic recording of the ground motion caused by the seismic waves. The digital recording is called a seismogram. A network of worldwide seismographs detects and measures the strength and duration of the earthquake's waves.
4) The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth's mantle below the crust. Earthquakes and volcanoes are the short-term results of this tectonic movement. The long-term result of plate tectonics is the movement of entire continents over millions of years
5) Volcanoes can provide people with many benefits such as: volcanic rock and ash provide fertile land which results in a higher crop yield for farmers. tourists are attracted to the volcano, which increases money to the local economy. geothermal energy can be harnessed, which provides free electricity for locals.