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Innermost LayerHottest Layer……
14,000,000 degrees
Celsius
Sun’s Energy Is Produced Here………By By Nuclear FusionNuclear Fusion::
The Core
The Radiation Zone
Energy travels via waves through this region.
Here, energy is radiated from the core much like a space heater radiates heat through the air.
Temperatures range from
4,500,0000C to 8,100,0000C
Toward Surface
Cooler Gases Sink Hotter Gases Rise
Toward Core
The Convection Zone
2,000,0000CEnergy produced in the core rises towards the surface via……….
convection currents
Photosphere (cont.)
OnlyOnly 5,700 – 10,300 5,700 – 10,300 00CC ……..…How cool is that?Granular appearance: Due to convection from underneath.Sunspots: Magnetic storms that appear as dark patches. (Very Cool)(Very Cool)Seem to peak in 8-11 year cycles.
Flares and Prominences: Eruptions of plasma from surface. • Sometimes they affect earth’s
atmosphere producing auroras and may interfere with satellite/radio communications.
The Solar Atmosphere
These regions of the sun can only be observed during a total solar eclipse
Chromosphere- A very thin reddish ring (2,500 km) as
seen just prior to and after the
peak of a total solar eclipse.
Corona- Extremely high temperatures
(millions of degrees Celsius)
- Emits high energy radiation.
- Produces both white and red light.
Solar Eclipse
Occurs when:Moon is located between sun and earth.
Moon casts its shadow on the earth.
Due to the moon’s cone-shaped shadow, a total solar eclipse can only be seen in limited areas.
When viewed within the:
Umbra- you see a total solar eclipse.
Penumbra- you see a partial solar eclipse.
Diameter: 1.4 million km (870,000 miles)Age: 4.5 billion yearsMass: 330,000 x EarthDistance from Earth: 149.6 million km (93 million miles)Density: 1.41 (water=1)Distance to Nearest Star: 9.46 million million kmSolar Wind Speed: 3 million km/hr.Luminosity: 390 billion billion megawattsSolar Cycle: 8 - 11 yearsTemperature at surface: 5,500o C (9,932o F)Temperature at Core: 14 milliono C (22.5 milliono F) Temperature of Sunspots: 4,000o C (7,232o F)Rotation Period at Equator: 25 Earth daysRotation Period at Poles: 35 Earth days
Solar Facts