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World Geography

World Geography. Chapter 2: “Earth in Space”. Chapter 2. In this chapter we will discuss: The Solar System The Earth and Sun Relationships The Earth 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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World Geography

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  1. World Geography Chapter 2: “Earth in Space”

  2. Chapter 2 • In this chapter we will discuss: • The Solar System • The Earth and Sun Relationships • The Earth System

  3. Stars: most stars are grouped together in large clusters called galaxies. The Milky Way is the galaxy in which we live in. Section 1: The Solar System

  4. 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. The Planets

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

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

  7. What happened to… • Pluto? What happened to Pluto? Or…

  8. 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.

  9. 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. The Sun

  10. 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 Earth’s tilt will affect the seasons and changes in weather.

  11. Section 2 • Earth – Sun Relationships • Solstices – the time that Earth’s poles point at their greatest angle toward or away from the Sun is called a solstice. • Equinox – Earth’s poles are not pointed toward or away from Sun

  12. Seasons • Based on the Sun’s direct rays on the position in Earth (see p. 30), the seasons, solstices, and equinox’s occur.

  13. Map portion for Chapter 2 Test

  14. Section 3 These four spheres make up the Earth’s environments, or surroundings. So how are the four spheres related? Biosphere Atmosphere Earth System Lithosphere Hydrosphere

  15. The Earth System • Atmosphere – the envelope of gases that surround the Earth (about 78% of Earth’s gases are made up of Nitrogen). • Protects the Earth from the Sun’s harmful radiation

  16. Earth System cont. • Lithosphere – the solid crust of the planet.

  17. Earth System cont. • Hydrosphere – all of the Earth’s water. About 70 percent of the Earth’s surface is covered by water.

  18. 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!

  19. Arctic Circle, 66.5 degrees North of the Equator. An Ant Antarctic Circle, 66.5 degrees South of the Equator.

  20. 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.

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