13.15 Other Objects in our Solar System

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13.15 Other Objects in our Solar System
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The Moon

• the moon orbits Earth every 27.3 days
• the moon rotates once on its axis as it completes
  one orbit around Earth
• as a result, we see only one side of the moon
• The amount of illumination we see changes the
  phases of the moon

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Did you know ..
The Tides
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FOUR MAIN SHAPES
Four Basic Shapes
FULL
CRESCENT
GIBBOUS
QUARTER
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Moon Phases
Waxing - increasing
Waning - decreasing
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Waxing Crescent
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SOLAR ECLIPSE
Occurs whenever the shadow of the Moon falls on
Earths surface, the Moon is between the Sun and
the Earth.
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SOLAR ECLIPSES
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LUNAR ECLIPSE

• an event where Earth moves directly between the
  Sun and Moon so that Earth casts its shadow on
  the Moon

Eclipses
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Asteroids

• small, non-spherical objects that are thought to
  be debris left over from the formation of the
  solar system.
• most are in the asteroid belt found between Mars
  and Jupiter

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Trans-Neptunian Objects

• objects beyond the orbit of Neptune
• found in the Kuiper Belt
• Pluto is found in the Kuiper Belt

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Oort Cloud

• At the farthest reaches of the Suns
  gravitational influence is a spherical cloud of
  icy fragments called Oort.

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Comets

• Most start in the Kuiper Belt and the Oort cloud.
• When it gets close to the Sun, the comet is
  warmed by solar radiation and the frozen
  substances become gases
• these gases are pushed outward by solar wind and
  radiation, forming a bright, glowing tail

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Meteoroids, Meteors, and Meteorites

• Meteoroids pieces of rock moving through space
• Meteors a meteoroid that reaches Earths
  atmosphere and burns up due to atmospheric
  friction.
• Meteorites a meteoroid that is large enough to
  pass through Earths atmosphere and reach the
  ground without being totally burned up.

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HOMEWORK

• Read pg. 430 - 433
• Answer 2 6, 11 on pg. 433