Splash Screen

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Splash Screen
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Intro 1
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Section 1-6
Our Solar System
The sun is at the center of our solar system. ?

• At least nine planets orbit our sun. ?
• What are they?

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Section 1-7

• Mercury, Venus, Earth, and Mars

• Farther from the sun are the gas giant planets
• Jupiter, Saturn, Uranus, and Neptune.
• Pluto, the exception among the planets, is a ball
  of ice and rock.

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Section 1-10
Getting to Know Earth

• The surface is about 30 land
• and about 70 water.
• The atmosphere is about
• 78 nitrogen,
• 21 oxygen,
• and 1 other gases, such as argon.

?
(pages 3536)
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Section 1-14
Earths Heights and Depths

• The highest point on Earth is the summit of Mount
  Everest at 29,035 feet (8,852 m) above sea level.

• Earths lowest point of dry land is on the shore
  of the Dead Sea at 1,349 feet (411 m) below sea
  level.

(page 36)
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• The deepest known level of the ocean floor is the
  Mariana Trench at 35,827 feet (10,923 m) below
  sea level.

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Section 2-6
Earths Structure

• A Layered Planet The earth is composed of three
  layers the core, the mantle, and the crust.

• The inner core is about 4,000 miles (about 6,430
  km) below the surface.
• The outer core is about 1,400 miles (about 2,250
  km) thick.

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• Both are made of iron and nickel.
• The mantle is made of hot, dense rock.
• It releases 80 percent of the heat generated from
  the earths interior.

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Section 2-8

• Many scientists believe that all the continents
  once were joined and have broken apart and
  drifted. This theory is called continental drift.

• Plates move gradually. As they move, they come
  together and pull apart.
• This movement pushes up mountains, creates
  volcanoes, and produces earthquakes.
• These activities are called plate tectonics.

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Section 2-12
Internal Forces of Change

• Sudden, violent movements along the fault lines
  are called earthquakes.

• The Ring of Fire is a zone of earthquake and
  volcanic activity surrounding the Pacific Ocean.
• Cities in this area, like San Francisco and Los
  Angeles, are prone to severe earthquakes.

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Section 2-13

• Volcanoes are mountains formed by magma that has
  broken through the earths crust.

• Volcanoes often rise along plate boundaries.
• They also occur when especially hot places deep
  inside the earth blast their magma to the
  surface.

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Section 2-2
Forces of Change

• fold
• fault
• weathering
• erosion
• loess
• glacier
• moraine

Define these terms

• continental drift
• magma
• plate tectonics
• subduction
• accretion
• spreading

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Maps and Charts 1
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Maps and Charts 2
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Maps and Charts 3
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Maps and Charts 4
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Maps and Charts 5
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Political Map Transparency
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Daily Focus Skills Transparency 1
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Daily Focus Skills Transparency 2
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Daily Focus Skills Transparency 3
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End of Slide Show