The Terrestrial Planets, Part II

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The Terrestrial Planets, Part II The Earth. EARTH.
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Presentation transcript:

The Terrestrial Planets, Part II The Earth

EARTH

Physical Data Diameter: 12,756.3 km Mass: 5.976x1027 g Density: 5.518 g/cm3 Rotation Period: 23.9 hours Tilt of Axis: 23.5o Surface Temperature: 200-300 K

Physical Data Orbital Semi-Major Axis: 1.49x1011 m (1 AU) Orbital Period: 365.26 days Orbital Inclination: 0o Orbital Eccentricity: 0.017 Satellites: 1 Magnetic Field: yes

Earth’s Interior

Earth’s Interior Currents in the Mantle Cause Plate Tectonics MOUNTAIN RANGE R I F F S OCEAN F L OOR T R ENCH CONT I NE NT MANT L E CURR ENT S

Earth’s Surface Continental Drift

Earth’s Surface

Earth’s Atmosphere 75.5% Nitrogen 23.1% Oxygen 1.29% Argon 1.7-0.06% Water Vapor 0.05% Carbon Dioxide 0.0013% Neon 0.00007% Helium

Earth’s Atmosphere ( I on os phere )

The Ionosphere F2 F1 E D F layers combine at night

The Ionosphere Altitudes of the Ionospheric Layers

The Ionosphere Reflection of Radio Waves

The Ionosphere Creation of Ions

Earth’s Magnetic Field Dipolar Field Magnetic South Pole is Located in the Geographic North Pole! S S N N

Earth’s Magnetic Field Van Allen Belts Inner Belt - Positive Protons Outer Belt - Negative Electrons e_ p+

Aurorae From the ground m

Aurorae The Auroral Oval From Space From the Space Shuttle

Magnetosphere Van Allen Belts gjjikui

The Moon

Earth’s Moon Average Distance to Earth: 384,400km (238,855 miles) Orbital inclination: 5.1o Diameter: 3476 km (0.273 DEarth) Mass: 7.35x1025 g (0.0123 MEarth) Surface Temperature: -274o F (night) 266o F (day) Surface Gravity: 0.167 Earth’s

The Moon’s Interior

The Moon’s Surface Craters: Maria: Older Terrain Younger Terrain

The Moon’s Surface Mare Orientale Largest impact crater on the Moon Has three concentric circular mountain ranges created by the impact

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