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The Biosphere: Earth's Essential Support System

Explore how the biosphere sustains life on planet Earth as it interacts with the atmosphere, lithosphere, and hydrosphere. Learn about Earth's distance from the Sun, its unique qualities, and the celestial bodies in our solar system.

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The Biosphere: Earth's Essential Support System

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  1. Chapter 2 : Lesson 1 Planet Earth

  2. Essential Question How does the biosphere support life on Earth?

  3. Where are we? • 93,000,000 miles from the Sun • 3rd Planet in from the Sun • 24,900 miles in circumference and 7900 miles in diameter • Only planet in Milky Way solar system that can sustain human life

  4. THE MILKY WAY • Our Solar system consist of the sun • 8 planets • 1 dwarf planet (Pluto) • Other celestial bodies that orbit the sun • Comets > spheres covered with ice and dust that leave trails of vapor as they race through space • Asteroids > large chunks of rocky material found in space • By size: Pluto (dwarf), Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter

  5. Hydrosphere • The water areas of the Earth (oceans, seas, rivers, lakes and water in the atmosphere)

  6. Lithosphere • Uppermost layer of the Earth includes crust, continents, and ocean basins

  7. Atmosphere A thin layer of gases that surrounds the Earth On and Abovethe Earth

  8. Biosphere The part of the earth where life exists (atmosphere, lithosphere and hydrosphere)

  9. Continental Shelf Part of a continent that extends out underneath the ocean.

  10. Review Question: Chapter 2 : Lesson 1 Read pages 40-43 and answer Review Questions on page 43 Hand in Google Class Room.

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