GEOGRAPHY MIDDLE SCHOOL

By what processes can a volcanic eruption affect temperature around the world

Answers

Answer 1
Answer: world-wide affects of volcanic eruptions only happens when there are large explosive eruptions that throw material into the stratosphere. If it only gets into the troposphere it gets flushed out by rain. 
the size of the particles (again mostly droplets of sulfuric acid) If they are big then they let sunlight in but don’t let heat radiated from the Earth’s surface out, and the net result is a warmer Earth (the famous Greenhouse effect). If the particles are smaller than about 2 microns then they block some of the incoming energy from the Sun and the Earth cools off a little. That seems to have been the effect of the Pinatubo eruption where about a 1/2 degree of cooling was noticed around the world. Of course that doesn’t just mean that things are cooler, but there are all kinds of effects on the wind circulation and where storms occur. 
even more controversial connection involves whether or not volcanic activity on the East Pacific Rise (a mid-ocean spreading center) can cause warmer water at the surface of the East Pacific, and in that way generate an El Nino. Dr. Dan Walker here at the University of Hawai’i has noticed a strong correlation between seismic activity on the East Pacific Rise (which he presumes indicates an eruption) and El Nino cycles over the past ~25 years. 
volcanism produces about 5X10^11 kg of CO2 per year about 3% of the total CO2 with the other 97% produced by humans. 
hence, volcano have more affect on weather near area it erupts.
Answer 2
Answer: world-wide affects of volcanic eruptions only happens when there are large explosive eruptions that throw material into the stratosphere. If it only gets into the troposphere it gets flushed out by rain. 
the size of the particles (again mostly droplets of sulfuric acid) If they are big then they let sunlight in but don’t let heat radiated from the Earth’s surface out, and the net result is a warmer Earth (the famous Greenhouse effect). If the particles are smaller than about 2 microns then they block some of the incoming energy from the Sun and the Earth cools off a little. That seems to have been the effect of the Pinatubo eruption where about a 1/2 degree of cooling was noticed around the world. Of course that doesn’t just mean that things are cooler, but there are all kinds of effects on the wind circulation and where storms occur. 
even more controversial connection involves whether or not volcanic activity on the East Pacific Rise (a mid-ocean spreading center) can cause warmer water at the surface of the East Pacific, and in that way generate an El Nino. Dr. Dan Walker here at the University of Hawai’i has noticed a strong correlation between seismic activity on the East Pacific Rise (which he presumes indicates an eruption) and El Nino cycles over the past ~25 years. 
volcanism produces about 5X10^11 kg of CO2 per year about 3% of the total CO2 with the other 97% produced by humans. 
hence, volcano have more affect on weather near area it erupts.

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Is the United States a country?
What does it mean by a state? e.g: Florida, Massachusetts

Answers

Yes, the United States is a country. Yes, by states it means the 50 states that make up the United States. Florida, California, and Hawaii are all examples of states.

The Great Northern Migration of African Americans occurred in the:A. 1850s
B. 1870s
C. 1920s
D. 1930s

Answers

ANSWER:

Great Northern Migration of African Americans occurred in 1920s.

EXPLANATION:

  • The movement consisted of African American which were in 6 million. The migration took place from rural "Southern United States" to the urban Northwest, Midwest and west.
  • It is believed that The Great Northern Migration of "African Americans" took place from "1916 to 1970".
  • This movement was recognized as the huge and most rapid movement of mass.  In every U.S. Census before  1910, more than "90%" of the "African-American population" lived in the American South.

Answer:

The Great Northern Migration of African Americans occurred in the:             C. 1920s

Explanation:

The Great Migration, sometimes known as the Great Northward Migration, or the Black Migration, was the movement of six million African Americans out of the rural Southern United States to the urban Northeast, Midwest, and West that occurred between 1916 and 1970.

Which best describes the Mediterranean climate?A. Mild
B. Cold
C. Desert
D. Extreme

Answers

Answer:

mild...i think

Explanation:

Mediterranean climate is very pleasant climate with warm, dry summers and cool, mild winters. Most of the coastal land around the Mediterranean Sea experience this climate.

Dry summers and mild, wet winters.

The full range of wavelengths of electromagnetic waves is called the _______?

Answers

Electromagnetic Spectrum.

Please only answer if you know the correct answer.How do green cities reduce water pollution?​

Answers

Green infrastructure also improves the quality of water drawn from rivers and lakes for drinking, which reduces the costs associated with purification and treatment—in some cases by more than 25 percent. And green roofs can cut heating and cooling costs, leading to energy savings of as much as 15 percent.

What is the definition to the measure of the energy of motion of particles of matter

Answers

The measure of the average energy of motion of particles in matter. Thermal Energy. The total energy of motion of particles of matter
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