World Geography

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World Geography

• Chapter 2 Earth in Space

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(No Transcript)
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Chapter 2

• In this chapter we will discuss
• The Solar System
• The Earth and Sun Relationships
• The Earth System

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Section 1 The Solar System

• Stars most stars are grouped together in large
  clusters called galaxies.
• The Milky Way is the galaxy in which we live in.

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The Planets

• The Sun and the group of bodies that orbit around
  it are calld the solar system.
• There are four inner planets and four outer
  planets now.

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The four inner planets

• The inner planets (in order) are Mercury, Venus,
  Earth, and Mars.
• They are terrestrial
• Meaning that they have a solid rocky surface.

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The four outer planets

• These planets are much larger and further from
  the Sun. The four outer planets (in order) are
  Jupiter, Saturn, and Uranus.

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What happened to

• Pluto? What happened to Pluto?

Or
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Pluto Activity

• Directions
• On the worksheet, you will be given a link about
  Pluto, disregard it.
• To find the answers to the questions research on
  yahoo news, cnn.com, or an encylopedia website.

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The Sun

• The Sun is a star.
• The Sun, Earth, and the moon all exert
  gravitational forces on one another that
  influence the rise and fall of ocean tides.

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Earth

• Rotation imagine that Earth has a rod
  connecting the two poles. The Earth spins and
  one complete spin is called a revolution.
• Revolution Earth makes 1 revolution every 365 ¼
  days. Why the ¼ ?
• Tilt The Earths tilt will affect the seasons
  and changes in weather.

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Section 2

• Earth Sun Relationships
• Solstices the time that Earths poles point at
  their greatest angle toward or away from the Sun
  is called a solstice.
• Equinox Earths poles are not pointed toward or
  away from Sun

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Seasons

• Based on the Suns direct rays on the position in
  Earth (see p. 30), the seasons, solstices, and
  equinoxs occur.

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Map portion for Chapter 2 Test
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Section 3

• These four spheres make up the Earths
  environments, or surroundings. So how are the
  four spheres related?

Biosphere
Atmosphere
Earth System
Lithosphere
Hydrosphere
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The Earth System

• Atmosphere the envelope of gases that surround
  the Earth (about 78 of Earths gases are made up
  of Nitrogen).
• Protects the Earth from the Suns harmful
  radiation

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Earth System cont.

• Lithosphere the solid crust of the planet.

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Earth System cont.

• Hydrosphere all of the Earths water. About 70
  percent of the Earths surface is covered by
  water.

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Earth System cont.

• Biosphere the part of the Earth that includes
  all life forms (human, plant, animal, etc.)

Pauly Shore in Bio Dome- worst movie ever!
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Arctic Circle, 66.5 degrees North of the Equator.
An
Ant
Antarctic Circle, 66.5 degrees South of the
Equator.
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Chapter 2 Test

• What you need to know
• 1. Maps with all continents, oceans, tropics,
  circles, equator, meridians, etc.
• 2. A short answer (essay) question over the 4
  spheres of the Earth System and how they are
  inter- related.
• 3. The Solar System with 8 planets in order from
  distance to the Sun.
• 4. Your chapter 2 Packets (key terms and
  concepts).
• 5. Current Events including Changes to Pluto and
  September 11th.