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Aim: What are the major parts and characteristics of Earth?

Aim: What are the major parts and characteristics of Earth?. Do Now: Now you know what density is, put the following layers in order from greatest to least density: Atmosphere , Lithosphere , and Lithosphere. Atmosphere. Layer of gases surrounding Earth. ESRT pg. 14 depicts each layer:.

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Aim: What are the major parts and characteristics of Earth?

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  1. Aim: What are the major parts and characteristics of Earth? Do Now: Now you know what density is, put the following layers in order from greatest to least density: Atmosphere, Lithosphere, and Lithosphere

  2. Atmosphere • Layer of gases surrounding Earth. • ESRT pg. 14 depicts each layer: Troposphere Increasing Altitude Stratosphere Mesosphere Thermosphere

  3. Each layer changes when the temperature changes • The following are the interfaces (boundaries) between each layer: Tropopause Stratopause Mesopause

  4. Troposphere • Where all air breathing life exists. • Where all weather occurs. • Where water vapor is most concentrated • Air pressure is 1 atmosphere (atm) at sea level. • At Earth’s surface: average surface temperature 15 °C (59 °F).

  5. ESRT pg. 1 portrays the elements by volume.

  6. Stratosphere • Contains ozone gas, which helps absorb ultraviolet (UV) radiation. • UV radiation = cause of skin cancer • Chlorofluorocarbons (CFCs) destroy the ozone layer. • Clear and dry conditions; strong steady winds (jet stream); airplanes fly in this zone. • Decreasing atmospheric pressure.

  7. Mesosphere • Temperature and pressure decreases. Thermosphere • Nitrogen and Oxygen atoms absorb solar energy, which causes the temperature to increase.

  8. Summary What is the approximate altitude of the mesopause in the atmosphere? (1) 50km (2) 66km (3) 82km (4) 90km What do the tropopause, stratopause, and mesopause have in common?

  9. Hydrosphere • Also known as “Liquid Earth”. • Covers 70% of Earth’s surface (oceans). • Covers thin film over the lithosphere. • ESRT pg. 1 portrays the elements by volume. • Hydrosphere and Atmosphere are bound to Earth by gravity.

  10. Summary 4.

  11. Lithosphere • Layer of rock that forms the outer shell of Earth (crust & rigid mantle). • Lies beneath the atmosphere and hydrosphere. • Approximately 100 kilometers thick, and is divided into lithospheric plates. • Most dense sphere!

  12. ESRT pg. 1 portrays the elements by mass and volume. Which two elements make up most of Earth’s crust by percent mass? Earth’s Interior • Region of Earth extending from the Lithosphere to the center of Earth. • ESRT pg. 10 shows Earth’s interior. • As depth increases, the density, pressure, and temperature increases.

  13. Summary Answer the following question using pg. 10 of the ESRT by inserting increases or decreases in the blank: As depth within the interior increases, the Density: ________________________ Temperature: ____________________ Pressure: _______________________ increases increases increases

  14. Earth’s outer core is best inferred to be: Liquid or Solid Average Density of: 4g/cm3 or 11g/cm3 The solid rock material that directly underlies the sediments on the ocean floor is part of the Earth’s lithosphere or outer core.

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