Earth

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Earth

• Wren, Ben, and Michael

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Intro

• Earth, Earth, Earth is amazing to some people.
• Some people think that earth is amazing but not
  all.
• Wren thinks the best thing on earth is people.
• Ben thinks the most amazing thing is the
  atmosphere.

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Intro

• Michael thinks the best things are the animals.
• Listen heres our report figure out the best
  thing you like on earth.

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How it formed

• Four and a half billion of years ago Earth was a
  bubbling hot inferno of liquid rock.
• Flying rock bombarded Earth for hundreds of
  millions of years after the planet first took
  shape.
• Scientific evidence indicates that the planet
  formed four and a half billion years ago and life
  appered on its surface within

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How it formed

• billions of years.
• The volcanoes spewed gas that wrapped earth in a
  primitive atmosphere.

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Description

• The earth weighs 6,600,000,000,000,000,000,000
  tons!
• Its amazing age is 4,500,000,000.
• Can you believe the hottest temp. is 136oF and
  the coldest is -127oF.
• 29.5 of earths air is oxygen.
• The earths atmosphere works like a huge engine
  that moves moisture across the earths surface.

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Crust

• The earth has four layers.
• The thinnest layer is the crust.
• The crust is made of different minerals.
• This layer is only 5-30 miles deep.

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Mantle

• The mantle is made up of two parts, the upper and
  lower, the mantle is around 1800 miles thick.
• The upper part is cooler than the lower.
• The lower is very hot.
• The mantle consists of different rocky materials.

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Core

• The core is the center of the earth, it is
  divided into two parts, the inner core and the
  outer core.
• The inner core is solid iron and nickel.
• The outer core is liquid iron.

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Description

• For one whole rotation it takes 365.25 days to go
  all the way around the sun.
• It takes the earth 24 hours to complete a full
  circle.
• Its average orbit speed is a spectacular 18.6
  miles per second and 30 kilometers per second.

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Description Continued

• The earth nicknames are Blue Planet.
• Earth means Planet Life.
• Greek/Roman names are Tellus and Gaia.

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Extras

• 15 year old Edward Hughes shows a magnificent 14
  ton meteorite.
• Most pleasant thing on earth are canyons and deep
  valleys.
• The grand canyon is 277 miles deep and 18 miles
  wide.
• The greatest canyon on earth.

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Future

• One reason scientist study our earth and moon is
  to try to learn what these two bodies will do in
  our solar system will become in the future.
• It is likely that millions and billions of years
  from now earth and the moon will fall together
  and become one body in space long before that
  happens other disasters may befall earth.

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Ending

• Thats all about the earth.

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