1. There are four eras of Earth’s history they are Precambrian (87.6%)‚ Paleozoic (7.1)%‚ Mesozoic (3.9 %)‚ and Cenozoic (1.4 %) 2. There are four layers and two sub layers. * Inner core is solid metal and made up of nickel and iron * Outer core is made of a liquid molten core of nickel and iron * Mantle is made up of dense and mostly solid silicate rock * Lithosphere is the uppermost layer (100km thick) * Asthenosphere is the layer below the
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flat base at a fairly low altitude and often a flat top‚ clouds of an active thunderstorm. They also happen to be coincident with positive CG‚ or cloud-to-ground lightning strokes (Heavner‚ 2004). The discharge‚ or the presentation of a visible sprite‚ can last anywhere from 5ms to 300ms‚ but they are still incredibly hard to catch (Thomas‚ 2002). Sprite’s spatial structures range from small to multiple vertically elongated spots which can extend from cloud tops up to altitudes around 95 km. It is very
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Jet Propulsion Made by- Bhawesh Lesson Objectives After to: this lesson students should be able Define what a jet engine is Describe how Newton’s laws apply to jet or rocket engines List examples of jet engine applications List some key points in the history of jet propulsion List advantages and disadvantages of jet engines Definition of a Jet Engine An engine that burns fuel and uses the expanding exhaust gases to turn a turbine and/or produce
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Aurora Borealis The Aurora Borealis is a beautiful display of lights created by nature that appear in the night sky. "Aurora Borealis"‚ the Latin name of the aurora of the northern hemisphere‚ means the red dawn of the north. The name comes from the famous Italian scientist Galileo Galilei who‚ among other things‚ studied the lights around the year 1600. In Rome‚ were Galileo was living‚ the red color dominates‚ but the most common color is actually greenish-yellow‚ which I will cover later in the
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isosceles triangle with one 60 degree angle. The sum of two sides is greater of the third side and the difference of two sides is smaller than the third one. Each bisector‚ altitude and angular bisector of a side is coincident. Equilateral triangle is a symmetrical figure and it has three symmetric axes‚ each bisector‚ altitude and angular bisector of a side locates in the symmetric axes. The circumcenter‚ incenter‚ orthocenter and center of gravity are the center of circle. 3. Isosceles Triangle
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The Rotating Sky – Pre-Lab I. Background Information This week’s lab is based on material developed by the University of Nebraska Astronomy Education Project. The material we need can be found at http://astro.unl.edu/naap/motion2/motion2.html Work through the explanatory material and play with the simulators on The Observer‚ Two Systems – Celestial- Horizon‚ the Paths of Stars‚ and Bands in the Sky. All of the concepts that are covered in these pages are used in the Rotating Sky Explorer
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developed by a team of Lockheed Martin employees called Skunk Works. The U-2A was revolutionary for its time being able to fly at altitudes of 70‚000 feet and for fly for 3000 miles. It had a payload of 700 pounds of the latest photoreconnaissance equipment. Shortly
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MODIFICATION SOLAR ANALYSIS: SUN PATH DIAGRAM Sun path diagrams show the path of the sun in the skydome as projected onto a horizontal surface. The sun path diagram can be used to determine the sun s position in terms of altitude and azimuth for any hour of the year. Altitude (section): The angle between the sun and the earth. Azimuth (plan): The bearing angle of the sun. You must know both in order to draw
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Before long range fighters like the P-47 of P-51 were developed‚ B-17s took terrible losses from German fighters. On one mission alone‚ there were over 400 bombers lost. Flak was also a large destroyer of B-17s. Flak is a shell that‚ at a preset altitude‚ exploded and threw shrapnel throughout the air. The P-51 Mustang‚ one of the best performing fighters in World War 2‚ escorted the B-17 on its bombing runs in Germany. It started development when the British‚ looking to purchase another order of
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Troposphere is the lowest layer of the atmosphere and is about 7 miles thick. Most clouds and weather we have are found in this layer. The atmosphere is thicker at the equator‚ and thinner at the poles. The temperature also decreases with higher altitudes. -The Stratosphere is located between 7 and 30 miles above the earths surface. This part of the atmosphere contains the ozone layer‚ which absorbs most of the harmful UV radiation from
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