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APES
APES HANDOUTS
Writng an abstract
The Lorax
A Dogged Investigation
The Scientific Method
Tragedy of the commons
Critical Thinking
Review Sheet Sci Analysis
Math Practice #1
Math Practice #2
Math Practice #3
Half life problems
Energy Transformations
Review sheet Energy
Geology Review Sheet
Atmosphere/hydrosphere review sheet
Odyssey
Animal behavior study
Eating at a lower trophic level
The Lesson of the Kaibab
Biome notes
Biosphere Review Sheet
People bomb synopsis
Analyzing Age Structure Diagrams
CFL Bulb Survey
Human Population Review Sheet
Environmental Management
Hydrosphere under attack review sheet
Cap and Trade
Air Pollution Chemistry
Air pollution review sheet
Defining Hazardous Waste
Solid & Hazardous Waste Vocab
Pay As You Throw
Energy and recycling
Exotic Species
Cane Toads
Biosphere under attack review
Car Energy Calculations
Ethanol
Producing energy review sheet
The Appliance Explosion
Determining Risk
Human health review sheet
EXTRA CREDIT
Review Sheet
APES Investigations
EARTH SCIENCE
EARTH SCI HANDOUTS
ASTRONOMY
FOR TEACHERS
ACTIVITY IDEAS
ALUMNI
SUFFOLK
Intro to Geology
Lab Schedule
Lecture schedule
   
 


1. How long will it take 600 grams of Plutonium 239 (half life 24,400 years) to decay to 18.75 grams?

2. How many grams of iodine 131 (half life 8.07 days) would be left after 48.42 days if you start with 25 grams?

3. Approximately how many years must a sample of Americium 241 (half life 458 years) be stored before it decays to a safe level?