EARTH

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EARTH SPACE SYSTEMS

• SOL REVIEWtest is coming upget ready!

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Rotation vs. Revolution

• Rotation

• Revolution

• Earth rotates about its axis
• Takes 1 DAY

• Earth revolves all the way around the sun
• Takes 1 YEAR

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Moon, Sun, Earth Positions

• The Earth REVOLVES around the sun and the moon
  REVOLVES around the Earth.

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Eclipse

• A lunar eclipse occurs when the moon passes into
  the Earth's shadow. The only way that can happen
  is if the Earth is between the sun and the moon.

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Phases of the Moon

• New Moon

• Full Moon

• Moon receives sunlight only on the side facing
  away from the Earth

• Moon receives sunlight only on the side facing
  towards the Earth

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Solar System

• Planets that are closer to the sun are HOTTER
• The SUN produces its own light, and its HOT!
• The order of the planetsgoing from those closest
  to the sun to those furthest out
• Mercury, Venus, Earth, Mars, Jupiter, Saturn,
  Uranus, Neptune
• and then theres that guy Pluto

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Earth

• Its a pretty cool planetits got an atmosphere,
  and life, and oceans, and lakesall sorts of
  stuff!

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Astronomy

• Humans have always been interested in space.
  What instrument do we use to look far into space?
• The Telescope!

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Space Exploration

• Where have humans been in space? Mars? The
  Moon?
• YES, weve been to the MOON!
• We have put some robots on Mars, but no human has
  stepped foot on Mars
• It took a long time to put someone on the moon
  because we had to develop the technology to be
  able to explore space!

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Gravity The Moon Ocean Tides

• What causes tides?
• The gravitational pull of the moon!
• The gravity between the earth and the moon pulls
  the water into and off of the shore.

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Gravity Force that holds Sun, Planets, Moon in
Place

• Gravity pretty much is the glue thats keeping
  this whole solar system together
• It keeps the sun, planets, and moon in orbit

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Gravity Mass vs. Weight

• Mass is the same, no matter where you are in the
  universe
• Weight takes in to consideration acceleration due
  to gravity
• therefore you weigh different based on where you
  are in the universe
• You weigh a lot more on Earth than you would on
  the moon, b/c there isnt much gravity on the
  moon
• BUT, your mass is the same on the Earth the
  moon!

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Gravity

• Amount of gravitational force between two objects
  is dependent on two things
• Distance between the two objects
• Mass of the two objects
• To have LOTS of gravitational pull between the
  two objects, the objects have LOTS of mass and a
  SMALL distance between the two

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Fossil Fuels

• Burning fossils produces sulfur dioxide (air
  pollution)which contributes to ACID RAIN Acid
  rain is NO good
• Fossil Fuels are a NON-renewable resource, and
  they have a lot of associated environmental
  problems
• Nuclear energy is one potential alternative to
  burning fossil fuels, but theres issues with
  nuclear toolike where to store the waste!

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Renewable Sources of Energy

• Renewable sources of energy are good, well
  because we wont run out of them!
• Solar Energy Sun Energy available
  everywhereit distributes heat by radiation
  convection

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Earth Systems Camouflage

• Animals who look like whats in their environment
  survive more because predators cannot see them

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Animal Adaptations

• Animals that are most well adapted to their
  environment will have the best chance of
  survival. Animals bodies reflect their
  lifestyle
• For example
• Fish swim ? have fins
• Hummingbirds eat nectar ? have long thin beaks

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Biomes

• Large areas of land that have similar climate,
  type of animals, plants, etc.
• Lots of different biomesjust know some general
  characteristics of biomes
• This will be covered further in Ecosystems

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Humans must be responsible consumers

• Its important to not over hunt or over harvest
  any plant or animal, because if we take too many
  of any one thing, it may not be around next year

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Fossil Record

• Bones found deepest in the Earth are the oldest
• Archeologists can study animals and plants that
  are extinct by digging and researching the fossil
  record
• Often, things like hair, skin, and other soft
  tissue is not preserved.
• These tissues decay much quicker than bones do.

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The Water Cycle
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Water Cycle

• Precipitation water rains from the clouds
• Evaporation water changes from liquid to gas at
  the surface of lakes and ponds
• Condensation water vapor condenses to form
  clouds