sc300 unit four alissa rennie [email protected] aim: alissarennie1
TRANSCRIPT
Unit 4: A busy week!
• Reading this week: Chapters 3 and 17• Energy flow• Food chains• Food webs• Ecological pyramids• Energy conversion• Energy Discussion Board – Group Project• Assignment• Q&A
Energy
• All of Earth's systems, both living and nonliving, transform the Sun's radiant energy into other forms.
Food chain
Grass → Grasshopper → Toad → Snake → Hawk → Bacteria (decay)
Autotrophs → Herbivores → Carnivores → Decomposers (Producers) (Primary (Secondary,
Consumers) tertiary, etc. consumers)
Image credit: Microsoft Clip Art
Food Web
FOOD CHAIN(just one path of energy)
FOOD WEB(everything is connected)
Image credit: Science Bob
www.sciencebob.com
Field Trip
• Lake Michigan Backgrounder
• http://techalive.mtu.edu/meec/module08/FoodWeb.htm
Lake Michigan food web
Mussel destroying link in Lake Michigan food web
Energy conversion
Vegetarian advocacy?
• 1350 kilograms of corn and soybeans is capable of supporting one person if converted to beef.
• 1350 kilograms of soybeans and corn utilized directly without converting to beef will support 22 people
Affect of Feeding at Lower Trophic Levels
2000 tons of Grass
54 million Grasshoppers
180,000 Frogs
600 Trout
Human
AdultOne
Number of Adult Humans Supported for a year
Thirty
Nine Hundred
Two Thousand
Unit Four Groups – Discussion BoardBioEnergy
Coal Geothermal
Hydrogen
HydropowerNuclear
Natural Gas
Oil Solar Wind
Last Week: Collaborate, strategize, and divide up the work.
Wed – Fri: Make separate posts, being careful never to repeat.
Sat – Sun: Comment on the suitability of other groups' energy sources. Feel free to DEBATE…but maintain RESPECT!
Mon & Tue: Vote for the energy source you think is BEST and explain your vote.
Plate Tectonics
• Think about a geological feature near you…how is it changing over time? (Or has it changed abruptly?)
• North America is separating from Europe at the rate of about 5 centimeters (about 2 inches) a year.
Volcanoes and Earthquakes
• Abrupt changes
Volcanoes
Earthquakes
• The San Andreas Fault
• How are they measured?
The Richter Scale
Why do we get earthquakes?
Where do they occur most often in the US?
Where do they occur most often in the US?
• Alaska!
Why is the earth moving?
• It’s super hot in the center of the earth.
• The heat moves towards the colder outer regions.
• This causes spreading in the rocks.
Assignment: Unit 4
• For this project, you will use the United States Geological Survey (USGS) tools to help determine if you are in danger, based upon where you live. Visit the USGS interactive map:
• http://gldims.cr.usgs.gov/nshmp2008/viewer.htm • This displays the regions of the United States that are most
likely to experience a significant earthquake in the next fifty years. The scale moves from white (almost zero risk) to red (very high risk).
Assignment: Unit 4
• Please be sure to answer the following 9 questions thoroughly as listed in the project description.
Assignment: Unit 4
• Between 750-1000 words not counting the title page.
• Include a title page, double space, font size 10 or 12
• Include a highly developed viewpoint/thesis, purpose and exceptional content
• Demonstrate superior organization: use logic
• Free of grammar and spelling errors
• No evidence of plagiarism
• Use the APA style for all citations
Assignment: Unit 4
• Check the rubric! Its in the syllabus.
Questions?
Image credit: Microsoft Clip Art