Transcript http://cse.ssl.berkeley.edu/SegWayEd/lessons/boss/lessonplan2.htm

Our Solar System
The Planets
Earth Science Regents
Astronomy
Mrs. Brighton
My Very Educated Mother Just Served Us
Nine
Pickles
Solar System
-The Sun, 8 planets, moons and millions of
asteroids and comets ALL of which
REVOLVE AROUND THE SUN!!!
Ecosphere
• Area what could support life. Extends
between the orbits of Venus and mars
Sun
ESRT
What do you notice about the 8
planets in our Solar System?
JOVIAN
TERRESTRIAL
Terrestrial
Earth like, Rocky
Small but Very
Dense
Few to no moons
Close to Sun; Short
period of
revolution
vs.
Jovian
Jupiter like, Gaseous
Large low density
Many moons
Far from Sun;
Long period of
revolution
Terrestrial Planets
Mars
Mercury
Venus
Earth
Mercury
MERCURY
•
•
•
•
Similar to Earth’s moon
Almost no atmosphere-No weathering!
Covered with craters.
Mercury goes through phases, like the
Moon. Mercury looks like a crescent moon
when it passes between Earth and the
Sun.
• Mercury has no moons.
Venus
VENUS
• ESRT look up its period of revolution and
period of rotation.
• What is interesting about its Periods of
Rotation and Revolution ??
Rotation is longer that Revolution;
Day is longer than its year. ESRT!!!
VENUS
• Atmosphere is mostly carbon dioxide.
Greenhouse Effect traps the heat.
Extremely Hot !!
• Sometimes called “Earth’s sister planet”
Earth
EARTH
• Only planet with liquid water and
LIFE.
• Atmosphere is 78% nitrogen and 21%
oxygen
• Water covers 71 % of the Earth’s
surface.
• Earth has one Moon
Earth as seen from the Moon
Mars
MARS
• Very thin atmosphere, mostly carbon
dioxide.
• Mars’ surface is red.
• Two known moons, Phobos and
Deimos.
Mars (Polar Ice Caps)
Jovian Planets
Neptune
Uranus
Jupiter
Saturn
Jupiter
JUPITER
• Diameter is 11 times greater than Earth’s.
• Over 1000 Earths could fit inside.
• Jupiter has NO solid surface, a ball of
liquid surrounded by gas.
• Great Red Spot, a huge storm of swirling
gas that has lasted for hundreds of years.
• Over 60 moons. Its four largest moons
were discovered in 1609 by Galileo.
The Galilean Moons
of Jupiter
-Io, Europa, Ganymede
and Callisto (top to bottom)
-The Great Red Spot of
Jupiter is on the left
-Ganymede is the largest
moon in the solar system
Saturn
SATURN
• Saturn has a density of 0.7. It is lighter
than water. Saturn would FLOAT!!!
• Thousands of rings made of rocks, dust,
and ice which orbit the planet.
• More than 30 moons. Titan, Saturn’s
largest moon, is the only moon in the solar
system with a significant atmosphere.
Uranus
URANUS
• Uranus spins on an axis that is tilted
more than any other planet.
• Only planet that is spinning on its
side.
• More than 20 moons.
Neptune
NEPTUNE
• Large Gas planet
• Furthest from the Sun
• More than ten moons.
Size Comparison of the Planets
Eccentric Orbits
Asteroid
Photograph was taken in space by Japan's Hayabusa
spacecraft while hovering above a small asteroid, 11/05.
http://images.google.com/imgres?imgurl=http://www.newscientist.com/data/images/ns/cms/dn8259/dn8259-3_506.jpg&imgrefurl=http://www.newscientist.com/article.ns%3Fid
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ASTEROID
• “Leftover” rocks from Big Bang
• Asteroid Belt between Mars and
Jupiter’s orbits
Asteroid Belt
Halley’s Comet
Nucleus
Every 76 years, as Halley’s
Comet nears the Sun, it
becomes visible to the unaided
Photo taken by space probe Giotto, 3/14/86.
eye. (next sighting in 2062)
COMETS
• Chunks of Ice, dust and gas
• Elongated orbits around the Sun
(very eccentric)
• Comet’s tail ALWAYS points
away from the Sun
Meteoroid
A rock that floats in space
Meteor
• Light that we see when a meteoroid
burns up in Earth’s Atmosphere
This photograph was taken just after the main
meteoroid body broke up into fragments.
Hoba West Meteorite
The largest meteorite ever found is the Hoba West Meteorite in
Namibia.
It weighs more than 50 tons.
It hit the ground about 80,000 years ago.
Estimated to be between 200 and 400 million years old!!
Meteorite
• Meteor that enters Earth’s
atmosphere and reaches the
Ground.
• Meteorites create huge Impact
Crater’s.
Impact Crater
• Large depression on the
surface, caused by the impact of
a meteorite.
• 300 tons of space rock and dust
fall onto Earth each day!
Impact Crater - Arizona
Crater Lake - Oregon