Atmosphere, Energy, & Wind
Upcoming SlideShare
Loading in...5
×
 

Atmosphere, Energy, & Wind

on

  • 955 views

 

Statistics

Views

Total Views
955
Views on SlideShare
951
Embed Views
4

Actions

Likes
0
Downloads
17
Comments
0

1 Embed 4

http://insightschools.angellearning.com 4

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Atmosphere, Energy, & Wind Atmosphere, Energy, & Wind Presentation Transcript

  •  
  • Earth Science March 22 nd , 2011 Mrs. Harris
  • Today’s Objectives
    • Describe characteristics of Earth’s atmosphere.
    • Describe the processes of radiation, conduction, and convection.
    • Differentiate between various types of winds.
  • What is the atmosphere?
    • All of the gases that surround the Earth
    • Name some gases!
  • What is the atmosphere? 78% 21% 0.9% 0.1%
  •  
  • Under Pressure
    • You’ve got the whole atmosphere on your shoulders!
    • Air pressure is the “force per unit area that is exerted on a surface by the weight of the atmosphere”
    • Like PSI (pounds per square inch)
  • Under Pressure
    • You’ve got the whole atmosphere on your shoulders!
    • Air pressure is the “force per unit area that is exerted on a surface by the weight of the atmosphere”
    • Like PSI (pounds per square inch)
    • Measured with a barometer
    • Think of all the air molecules over your head! (~9 miles for the first layer)
  •  
  • Services of the Atmosphere
    • Weather system that provides & delivers fresh water to the land
  • Services of the Atmosphere
    • Weather system that provides & delivers fresh water to the land
    • Holds heat to the surface of the Earth (without this daily temperatures would fluctuate at least by 80 o )
  • Services of the Atmosphere
    • Weather system that provides & delivers fresh water to the land
    • Holds heat to the surface of the Earth (without this daily temperatures would fluctuate at least by 80 o )
    • Protects us from small meteors and debris
  • Services of the Atmosphere
    • Weather system that provides & delivers fresh water to the land
    • Holds heat to the surface of the Earth (without this daily temperatures would fluctuate at least by 80 o )
    • Protects us from small meteors and debris
    • Shields us from strong UV radiation
  •  
  •  
  • Layers of the Atmosphere
  • Layers of the Atmosphere
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  • Where does weather happen?
  • Where is the ozone layer?
  • Where do auroras happen?
  • Where are the coldest temperatures?
  • Where are the hottest temperatures?
  • Where is most of the water vapor?
  • Any questions so far?
  • Radiation, Conduction, Convection Transferring Energy
  •  
  • Energy: Electromagnetic Spectrum
  • Energy: Electromagnetic Spectrum Radiation is the transfer of energy as electromagnetic waves.
  • Radiation
    • Can be scattered, reflected, or absorbed.
    • Scattering is caused when radiation hits particles in the atmosphere and is bent in all directions.
    • Reflection happens when radiation reaches the earth’s surface and is reflected back into the atmosphere. (remember albedo?)
    • Earth’s surface absorbs solar radiation and is what heats the surface of the earth.
    • The transfer of thermal energy as heat through materials.
    • This is how the atmosphere gets warmed.
    Conduction
    • The transfer of thermal energy as heat through materials.
    • This is how the atmosphere gets warmed.
    Conduction What happens to warm air?
  • Convection
    • The movement of molecules in a fluid due to differences in density that are caused by temperature variations; can result in the transfer of energy as heat.
    • The atmosphere behaves like a fluid.
  • What is a fluid? What makes it different from a solid or a gas? Baking soda & vinegar
  •  
  • Moving Energy Around
    • Some awesome benefits:
      • Stablizes Earth’s average temperatures (greenhouse effect)
      • Drives the water cycle (______, _______, ______ )
      • Creates wind/weather patterns  tomorrow
  •  
  •  
    • Before you leave, write something you learned.
    • Next class: why does my candle go out?
    • and how the atmosphere behaves like a fluid, humidity, clouds and fog, and precipitation.