9/13/13 14th Day of School Learning Goal (7.E.1.1): I will be able to describe the structure of Earth’s atmosphere. Due Today: Title, composition, properties & structure Powerpoint slides Evening Assignment: Have a great weekend!

Do Now In your composition notebook, copy and answer the following… Give one example of the events that occur in each temperature layer: -Troposphere -Stratosphere -Mesosphere -Thermosphere McDougall textbook, p. viii

Do Now How’d you do? Give one example of the events that occur in each temperature layer: -Troposphere: our weather, life -Stratosphere: ozone layer blocks UV Mesosphere: meteors burn up -Thermosphere: auroras, space shuttle

Thermosphere Name means “heat” Altitude range: miles Temperature range: -120F  to 3600F! Heat source: sun (from above) Special features: auroras, space shuttle Mesosphere Name means “middle” Altitude range: miles Temperature range: 32F  to -120F Heat source: stratosphere (from below) Special features: meteors burn up Stratosphere Name means “spreading out” Altitude range: 6-31 miles Temperature range: -76F  to 32F Heat source: sun (from above) Special features: ozone layer blocks UV Troposphere Name means “turning” Altitude range: 0-6 miles Temperature range: 59F  to -76F Heat source: ground (from below) Special features: weather, life Source: McDougall p. A20-21 and

Minor Assessment Assignment: Earth’s Atmosphere Powerpoint You will make a Powerpoint presentation about Earth’s atmosphere. You may use information and pictures from class, the textbook, other books, and the Internet but you MUST cite your sources (ex. title, page, web address, etc). Include text in your own words explaining any images you use. Your Powerpoint should have the following slides. Final Powerpoint is due Friday 9/13/13. Title slide with title, your name, period, date Slide defining atmosphere Slide(s) about the composition of Earth’s atmosphere -Gases -Particulates -Energy Slide(s) about the properties of Earth’s atmosphere -Air has substance -Air temperature decreases as altitude increases -Air pressure decreases as altitude increases -Air density decreases as altitude increases -Protects & supports life Slide(s) about the structure of Earth’s atmosphere -Thermosphere -Mesosphere -Stratosphere -Troposphere

Minor Assessment Rubric

Turn in assignment Be sure you have saved your PowerPoint so that I will recognize the owner! For example: eagleg_atmosphere_ppt Submit assignment to the dropbox on Haiku. Don’t forget to submit your assessment rubric with your self-evaluation also.

Evening Assignment Have a great weekend!