Final exam 2

Global Science Final Exam

Question 8

You can use the distribution of earthquakes and volcanoes to find where our earth’s plate boundaries are. Earthquakes help us because earthquakes are a consequence of our plate tectonics moving. Because of that earth quakes would most likely happen close to the plate’s boundaries or fault lines. Earthquakes happen when two plates collide into one another that’s also how mountains are formed. Volcanoes can also show where the earth’s plate boundaries are. Volcanoes are also found near the boundaries of the different plates because volcanoes happen when two plates separate away from one another. So where volcanoes are is where two plates have been separated. Earth quakes and volcanoes are measured with seismographs. Basically the scale is supposed to be a 0-10, but there was a movie that came out called 10.5 that can show you the destruction of earthquakes and how the measurements of them are important.

The chemical composition of magma of magma relates to plate tectonics because when the plates separate from each other it exposes the layer of the earth that holds the magma deep within so if the two plates would never separate you would never see the magma or a volcano. A volcano is circular because when the plates separate it exposes the magma and then it hardens ad makes the volcano structure that you see of the earth like in Hawaii. A volcano is made of a molten rock from the earth formed by the two plate tectonics. Volcanoes become explosive when the plates move again it’s all about the heat within the earth that also drives the place to move because heat is energy. Volcanoes vary a lot in size and explosiveness. It all relates to their plate tectonic environment.

Volcanoes change the atmosphere because when they erupt they are putting all the smoke into the air and that is a form of pollution. The smoke volcanoes cause and also kill because it can get into your lungs and prevent you from breathing but it can also be killed by the ash. There is a place you can go where a city was covered in ash and because it was still hot it molted to their body and because they got so much of it they were turned to stone. It can pollute the water and everything else too.

Bibliography.

www.mnh.si.edu/earth/text/4_0_0.html

The Dynamic Earth, Plate tectonics. 05/13/10. Marcus Cade

Earthquake.usgs.gov/learn/topics/plate_tectonics/rift_man.php

Science for changing the world, Earthquakes. July 24, 2012. Henry Spall.

7th grade teacher mr.Friedrick

 http://www.enchantedlearning.com/subjects/volcano/

http://newspagedesigner.org/photo/earthquakes-news-illustrated

http://whybecausescience.com/2013/06/05/plate-tectonics-the-ends-and-beginnings-of-the-earth-part-2/

Final Exam

Global Science Final Exam

Question 5

Our solar system is very unique. Our solar system is located in the Milky Way galaxy. It is on the outskirt area of the galaxy. Our galaxy is in a spiral shape. We are located on the Orion arm of the galaxy. Our solar system contains eight planets and many stars. Our solar system moves orbital in a ecliptically form. In our solar system the planets orbit the sun. There are eight planets and because they are all different distances away from the sun they all have a complete orbit at different times. In our perspective our solar system itself is ginormous let alone when you consider the entire universe. For this comparison I’ll use the earth because from what we know all of us that are human with intelligence it’s easy to make comparisons with the earth because it’s what we all live on. Earth is the fifth largest planet behind Jupiter, Saturn, Uranus, and Neptune. In our solar system the Sun is the biggest object by itself and without it we wouldn’t have life. Our solar system is set up with the sun in the middle with our planet orbiting the sun. The planets in order are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. We used to have nine planets in our solar system but the now defined “dwarf planet” Pluto is no longer meets the planet standards. Way back when it was told that the earth was the center of our solar system but that was found to not be true because if we were the center of our solar system the planets would revolve around us and other planets wouldn’t get the sun light they receive now. Our planet is told to be 4.6 billion years old. We know that from things like carbon dating.

The Big Bang theory accounts for the formation of the universe. The big bang theory basically says that a nebula exploded and from the heat formed the sun and all the fragments caused by the nebula became planets and asteroids. Without this theory of the Big Bang Theory we wouldn’t have life.

A cosmic wave background has helped us determine the age of the universe. The cosmic wave background is based off the big bang theory. Scientists measure the time the universe expands and the explosion rate of the big bang. “Astronomers estimated that the big bang occurred between 12 and 14 billion years ago, yet our solar system is believed to only be 4.5 billion years old.” (NASA Griswold)

Bibliography

wmap.gsfc.nasa.gov/universe/uni_age.htm

NASA, Universe 101. 12-21-2012. Britt Griswold

Universetoday.com

Planets and our solar system, History. 07/14/13. Elizabeth Howell

All my science teachers from my entire life.

http://www.schoolatoz.nsw.edu.au/homework-and-study/other-subjects-and-projects/science/the-solar-system-project

http://www.nasa.gov/mission_pages/kepler/multimedia/images/kepler-target-in-the-milkyway.html

http://spaceplace.nasa.gov/switch-a-roo/en/

Water pollution

1.

The first type of water pollution is it's when bad water goes into the soil and fertilizing sewage that contain high level of nutrients and up in the soil and that's the pollution. 

2.

Another type of water pollution is surface water pollution surface water includes natural waterfront me a service like rivers lakes and lagoons of hazardous substances coming into contact with the surface water dissolving physically with a lot of handhe service water pollution.

3.

Another type of water pollution is oxygen depleting pollution. This is when water bodies have microorganisms. This means that uses too much oxygen and therefore the land will die.

4.

Groundwater pollution is another type of water pollution it's when humans use pesticides and chemicals to harm the soil. 

5.

Another type of water pollution is suspended matter. This is when some pollutants do not easily dissolve in water.

6.

Another type of water pollution is chemical water pollution. This is when many industries and farmers work with chemicals end up in water.

 

7.

Lastly oil spillage is another type of water pollution. Oil spillage doesn't necessarily just affect the water it also affects the wildlife that live with it.

Wastewater treatment facilities are a point source of water pollution.

A nonpoint source form of water pollution is access fertilizers herbicides and Insecticides.

Some sources of water pollution are Farms boats and factories. Farms tie into our action project.

A consequence of water pollution is how it can effect the wildlife.

Water can be filtered so it can have a better quality

Toucanet water pollution you can not use pesticides and herbicides while farming.