Tuesday, March 20, 2012

Asteroid Belt

StarChild.com





The Asteroid Belt is the region of the solar system located between the orbits of the planets Mars and Jupiter. The belt travels in an elliptical path like the planets. It takes three to six Earth years to make a complete revolution around the sun. It is full with numerous irregularly shaped bodies called asteroids or minor planets. It is also called the main belt because there are others in the solar system. Some very large asteroids that occupies the Belt are Ceres, 4 Vesta, 2 pallas,and 10 Hygiea that make up half the mass of the Belt the rest can range up to dust particles. The asteroid is said to be formed because of  a theory called the Solar Nebula which is a disc-shaped cloud of gas and dust left over from the formation of the sun.
File:Dawn Flight Configuration 2.jpg
The first aircraft to travel the Asteroid Belt was Pioneer 10 which entered the Belt on July16, 1972. At the time there was some concern that  the debris from the Belt would cause problems to the space craft but it has since been traveling safely without any incidents.
File:AllendeMeteorite.jpg The Belt consists of four main asteroids:
The carbon rich Carbonaceous asteroids which dominate the Belt and make up 75% of visible asteroids. The S-type are silicate-rich and are commonly found in the inner part if the Belt and make up about 17% of  asteroid population.
The M-type are metal-rich and make up 10% of total asteroid population

Asteroids in orbit can cause collisions. collisions occur frequently. when asteroids collide and become numerous smaller pieces called asteroid families. an asteroid family is a population of asteroids that share similar elements. Dust that are in the Belt are caused by these collision.
An asteroid can be pulled out of its path orbit by the gravitational pull of a larger object such as a planet.
more than 7000 asteriods have been discovered and hundreds more have been discovered each year and hundreds more can not be sen from Earth.
The combination of fine dust particles and ejected material  produces the Zodiacal Light shown above. This faint glow can be seen at night extended from the direction of the sun.

Wednesday, March 7, 2012

   
a celestial sphere is an imaginary sphere of gigantic radius with the earth located at its center. The poles of the celestial sphere are aligned with the poles of the Earth. The celestial equator lies along the celestial sphere in the same plane that includes the Earth's equator. We can locate any object in the celestial sphere by getting to coordinates called the right ascension (longitude) and the declination (lattitude) so known as the celestial coordinates.

ecliptic, preccsion

Wednesday, February 15, 2012

hurricanes and tornadoes

Tornadoes:
  • they are often reffered as a twister or cyclone
  • a dangerous, violent rotataing column of air that is in contact with both the surface of the earth and a cumulonimbus cloud
File:Dszpics1.jpg

  • tornadoes come in many shapes and sizes but are typically in the form of a visible condensation funnel whose narrow end touches the ground destroying everything in its path
  • is often encircled by debris and dust
  • the most extreme tornadoes can attain wind speeds of more than 300mph
  • some types of tornadoes includes landspouts, waterspouts, multiple vortex tornado

      File:1957 Dallas multi-vortex 1 edited.JPG
      multiple vortex tornado
      
      waterspout
      
      landspout
        • less common in high lattitudes, frequently developed in tropical areas close to the equator
        • tornadoes have been observed in every continent except Antartica
      Hurricanes:
      • a storm system characterized by a low-pressure center and numerous thunderstorms that produce strong winds and heavy rain

      Wednesday, February 1, 2012

      Earth Science per. 7

      • water vapor is the most important gas in the atmosphere for understanding atmospheric processes
      • the process of  changing state requires that energy is transferred in the form of heat
      • when saturated, warm air contains more water vapor than cold air
      • relative humidity is a ratio of the air's actual water vapor content compared with the amount of water vapor needed for saturation  at that temperature and pressure
      • when the water vapor content of air remains constant, lowering air temperature causes an increase in relative humidity, and raising air temperature causes a decrease in relative humidity
      • when air is allowed to expand, it cools, and when it is compressed, it warms
      • four mechanisms that can cause air to rise: Orographic Lifting (mountain)      Frontal Wedging   Convergence   Localized Convective Lifting
      • stable air tends to remain in its original position, while unstable air tends to rise
      • for condensation or water to occur, the air must be saturated
      • clouds are  classified on the basis of their form and height
      • fog is a cloud with its base near the ground
      • in order for precipitation to form, cloud droplets must grow in volume by roughly one million times
      • the type of  precipitation that reaches earth's surface depends on the temperature profile in the lowest few kilometers of the atmosphere
      • the Coriolis effect describes how earth's rotation affects moving objects. All free moving objects or fluids, including the wind, are deflected to the right of their path of motion in the Northern Hemisphere. In the Southern Hemisphere, they are deflected to the left.
      • wind is the result of horizontal differences in the air pressure. Air flows from areas of higher pressure to areas of lower pressure
      • solar radiation is the ultimate energy source for most wind
      • three factors combine to control wind : pressure differences, the Coriolis Effect, and the friction
      • cyclones : pressure decreases from outer isobars toward the center (from out to in)
      • anticyclones are from in to out

      Wednesday, January 18, 2012

      earth science period 7 amayrani lopez

      Relative Humidity Map for the United States


      DailyPlaceMorningAfternoon
      75Daytona Beach8662
      75Fort Myers9058
      76Jacksonville8958
      74Key West7967
      73Miami8462
      74Orlando8956
      74Pensacola8560
      75Tallahassee9154
      74Tampa8857
      73West Palm Beach8363
      DailyPlaceMorningAfternoon
      75Daytona Beach8662
      75Fort Myers9058
      76Jacksonville8958
      74Key West7967
      73Miami8462
      74Orlando8956
      74Pensacola8560
      75Tallahassee9154
      74Tampa8857
      73West Palm Beach8363
      At Dayton Beach in Florida the average humidity is 75% htis average is taken every three hours throughout the day. The morning percent is 89and the afternoon is  62%

      Wednesday, December 14, 2011

      Lopez,Amayrani period 7

      1) I have done around five maybe but i was one of the students that arrived to this class a little late in the semester. I think my grade on these blog will be a B maybe lower becuase for some reason some of my blogs did not go through and i have no clue why!

      2) I dont know about my final grade because i have done well on your test, i have A's on both the tests and i dont know what i will get on my blog so i dont know? On the tests i got  A's when we retook them in class so that makes my probabilities on getting a good grade on the final slim.

      3) Three things i want to know about:
         Storms: i want to learn about tornadoes an how they form and come down to earth adn move around on earth.     about hurricanes besides that they are big tides that come and flood everything    about how snow forms
      Space: i want to know why pluto isnt a planet any more   the other planets that have been found     and the milkyway and other happenings in space
      Ocean: about the animals that live in the ocean   not just the animals but the plants that live there 

      Wednesday, October 19, 2011

      File:3-ton Slinky Loop.jpgChina uses it for bathing, Sweden and the U.S.A. use heat pumps and Turkey and Iceland use it for district heating.

       A 3-ton slinky loop prior to being covered with soil.  
      The three slinky loops are running out horizontally
       with three straight lines returning the end of the
      slinky coil to the heat pump

      
      Biomass fired district heating power plant.
      
        
      CountryProduction
      PJ/yr
      Capacity
      GW
      Capacity
      Factor
      Dominant
      applications
      China45.383.6939%bathing
      Sweden43.24.233%heat pumps
      USA31.247.8213%heat pumps
      Turkey24.841.553%district heating
      Iceland24.51.8442%district heating
      Japan10.30.8240%bathing (onsens)
      Hungary7.940.6936%spas/greenhouses
      Italy7.550.6139%spas/space heating
      New Zealand7.090.3173%industrial uses
      63 others716.8
      Total2732831%space heating