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Chapter 27: The Planets and the Solar System

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3. Titan is the only moon with a substantial atmosphere. The ... left after a meteor strikes the Earth. Why are there more craters on the moon than on the Earth? ... – PowerPoint PPT presentation

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Title: Chapter 27: The Planets and the Solar System


1
Chapter 27 The Planets and the Solar System
  • 27.1 The Inner Planets
  • 27.2The Outer Planets
  • 27.3 Planetary Satellites
  • 27.4 Solar System Debris

2
27-1 The Inner Planets
  • Two Planetary Neighborhoods
  • What is at the center of our solar system?
  • What are the Terrestrial Planets composed of?

The Sun
Rock
3. What are the Jovian Planets made-up of?
Gas
3
27-1 The Inner Planets
  • B. Mercury
  • Nearest the sun
  • Fastest revolution (88 days)
  • Rotates every 59 days
  • What did Mariner 10 do?
  • 5. Surface temperatures vary from 400ºC to
    200ºC.

Took photographs of the surface
4
27-1 The Inner Planets
  • Venus
  • Earths sister planet
  • Rotates from east to west every 243 days
  • Orbits the sun every 225 days. What does this
    mean?
  • 80 is covered with lava and the atmosphere is
    mostly sulfuric acid.
  • Surface temperature is 475ºC. Why is it so hot?

The Day is longer than the Year
Greenhouse Effect
5
27-1 The Inner Planets
  • Mars
  • 687 days to orbit the sun.
  • What is its atmosphere made of?
  • It has four seasons.
  • It has polar ice caps.
  • What is the name of the largest volcano in the
    solar system?
  • Is there life on Mars?

95 C02 5 N Ar
Olympus Mons
Maybe?
6
27-2 The Outer Planets
  • The Jovian Planets
  • What invention led to the discovery of these
    planets?
  • What are Jovian planets composed of?
  • The temperature and density increases with depth.
  • How do rings form?

The Telescope
Gas
Gravitational pull on free gas and dust particles
7
27-2 The Outer Planets
  • B. Jupiter
  • 11.9 years to orbit the sun
  • Rotates every 10 hours
  • Largest planet in the solar system
  • It has a red eye

8
27-2 The Outer Planets
  • Saturn
  • 30 years to complete one orbit
  • Rotates every 10 hours
  • Lowest density of any planet
  • Radiates more energy than it receives

9
27-2 The Outer Planets
  • D. Uranus
  • 84 years to complete one orbit
  • Average temperature is 200ºC
  • Rotates every 17 hours

10
27-2 The Outer Planets
  • Neptune, Pluto, and Charon
  • 165 years to complete one orbit
  • Rotates every 16.1 hours
  • Winds up to 2000km/hr
  • Average temperature is 225ºC
  • Neptune and Pluto switch orbits every 248 years
  • Pluto is the ____ Planet. Or is it even a
    planet?
  • Who is Charon?

Moon of Pluto
11
27-3 Planetary Satellites
  • Satellites of Earth and Mars
  • Bodies that revolve around planets are called
    satellites or moons.
  • Who are Phobos and Deimos?
  • How many moons do we have?

The moons of Mars
One
12
27-3 Planetary Satellites
  • B. Jupiters Moons
  • Has at least 28 moons
  • Which one is geologically active?
  • Which one has water?
  • Which one is the largest in the Solar System?
  • Which one is the most heavily cratered in the
    Solar System?

Io
Europa
Ganymede
Callisto
13
27-3 Planetary Satellites
  • Saturns Moons
  • Has at least 24 moons
  • Which one is the largest?
  • 3. Titan is the only moon with a substantial
    atmosphere.
  • The moons of Uranus and Neptune
  • Uranus has 21.
  • Neptune has 8.
  • Triton has Ice volcanoes
  • Miranda has been shattered as many as five times.

Titan
14
27-4 Solar System Debris
  • Comets and TNOs
  • Collisions create craters.
  • Comets-Dirty snowballs made of dust particles
    trapped in a mixture of water, carbon dioxide,
    methane and ammonia.
  • What are TNOs? Where are they found?
  • What creates the tail?

Trans Neptunian Objects
The Oort Cloud
Solar Wind
15
27-4 Solar System Debris
  • B. Asteroids
  • Asteroids -Solid, rocklike masses.
  • How big are they?
  • Where do we find asteroids?
  • What happens if they hit earth?

Most are less than 1km long
In the Asteroid Belt between Mars and Jupiter
16
27-4 Solar System Debris
  • Meteors, Meteoroids and Meteorites
  • 1. Meteoroid - Rock or icy fragment traveling in
    space. Smaller than an asteroid.
  • 2. Meteor - Shooting star, created when a
    meteoroid enters the atmosphere and begins to
    burn up.

17
27-4 Solar System Debris
  • 3. Meteor Shower - occurs when Earth passes
    through the tail of a comet, and particles from
    the tail plunge through the atmosphere.
  • 4. Meteorite - part of a meteoroid that strikes
    the Earth.

18
27-4 Solar System Debris
  • What are the three main types?
  • ..
  • Which is the most abundant source?
  • Why is Antarctica a good place to find
    meteorites?

Stony 94
Iron 5
Stony/Iron 1
Antarctica
It is white and there is little weathering
19
27-4 Solar System Debris
  • Impact Craters…
  • …are bowl-shaped depressions left after a meteor
    strikes the Earth.
  • Why are there more craters on the moon than on
    the Earth?

It doesnt have an atmosphere, weather or Plate
Tectonics.
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