Monday, February 13th Pg. 98 RTW: Create one multiple choice test question (on invasives/overfishing) Objective: I will be able to be prepared to ace the Unit 9 test on invasive species and overfishing knowing their impact on the environment and the methods. Agenda: Grade Review Grudgeball Review for Unit 9 Invasive/Overfishing Test Homework: Study for Unit 9 Test

Tuesday, February 14th Bags and phones up front Grab your clicker Honors: Will need pen/cil & paper Objective: I will be able be prepared to pass the test and understand the impact humans have on the environment. Agenda: Unit 9 Invasive/Overfishing Test Rising Seas Article & Questions pg. 99 Homework: Finish article and questions if you didn’t in class

Rising Sea Levels

Wednesday, February 15th Pg. 98 RTW: World sea level rise is a natural event, why should we be so concerned? Objective: I will be able to understand the impact humans have on the environment. Agenda: Sea Level Rise Notes (pg. 101) Homework: None 

What’s Causing Sea Level Rise? Ice Melt More Water, More Mass  Thermal Expansion, More Volume Heat  Sea Level Rise

Arctic Sea Ice Is Disappearing At Record Rate Summer 1979 Summer 2003 The loss poses grave environmental dangers … but not Sea Level Rise … (Archimedes Principle)

Ice in water (icebergs) Ice on land (ice caps & glaciers) Melting of ice

Greenland Is a Growing Worry Its ice sheets are flowing faster towards the ocean during summer. Possibly due to surface melt water cascading down crevases and providing lubrication at the ice/rock interface. June 6, 2002GREENLAND ICE SHEET FLOWS FASTER DURING SUMMER MELTINGNew measurements show that the flow of ice in the Greenland ice sheet has been accelerating since 1996 during the summer melt season. The results suggest that the ice sheet may be responding more quickly to the warming climate than previously thought.In an article published in Science magazine's online Sciencexpress June 7, Jay Zwally, an ICESat Project scientist at the NASA Goddard Space Flight Center, Greenbelt, Md., Waleed Abdalati, a Polar Program scientist at NASA Headquarters, Washington, and colleagues report that increases in ice velocity during the summer are correlated with the timing and the intensity of ice sheet surface melting.Using periodic Global Positioning Satellite measurements from 1996 through 1999, the researchers discovered that the ice flow speeds up from 31.3 cm (12.3 inches) per day in winter to a peak of 40 cm (15.7 inches) per day in the summer when surface melting is largest. "This study demonstrates that surface meltwater travels quickly through the 1200 meter (approx. 3/4 mile) thick ice to the bedrock to make the ice slide faster. This process was known for decades to enhance the flow of small mountain glaciers, but was not known to occur in the large ice sheets," Zwally said.The meltwater makes its way from the surface to the bedrock by draining into crevasses and large tunnels called moulins that may be as large as 10 meters (approx. 33 feet) in diameter. More meltwater underneath the ice sheet provides lubrication to allow the ice sheet to move faster toward the coastline of Greenland.Over time, as ice melts from the top of the ice sheet, the ice thins and spreads out toward lower elevations closer to the coast. The meltwater also carries heat (in the form of water) from the top of the ice to the base of the ice that sits on the bedrock.A separate study by Abdalati and Konrad Steffen of the University of Colorado showed that the melting of the ice sheet surface has been increasing at a rate of nearly 20% over the last 21 years, while summer temperatures in that same period have increased by one quarter of a degree Celsius (.45� Fahrenheit). The link between ice sheet melt and ice flow suggest that the increasing melt may be more significant than previously believed.The faster ice flow, ice thinning and consequent lowering of the surface elevation of the ice sheet can open a feedback to more melting that has not been considered in computer models that predict ice sheet response to climate change.NASA's ICESat mission, which is planned for launch in December of this year, will use a laser altimeter to monitor ice sheet elevations and show elevation changes as small as 1 cm/yr. ICESat's measurements will tell us whether the ice sheets are growing or shrinking overall, how much they are contributing to sea level change, and will help predict future changes in ice volume and sea level.Zwally and his colleagues speculate that increased movement of the ice sheet due to more meltwater underneath the ice sheet may have contributed to the demise of the Laurentide ice sheet approximately 10,000 years ago. During that time, the Earth's axis of rotation was more tilted toward the Sun causing warmer summers in the Northern Hemisphere.

See classmate’s or Ms. Barker’s notebook Copy down flow chart See classmate’s or Ms. Barker’s notebook pg. 101

Did You Know? Of the 350 or so shark species, about 80% grow to less than 1.6 m and are unable to hurt people or rarely encounter people. Only 32 species have been documented in attacks on humans, and an additional 36 species are considered potentially dangerous.

Thursday, February 16th Objective: Agenda: Homework: I will be able to understand the impact that humans have on the environment. Agenda: Dolphin Case Study Part 1: Annotations & KWL chart Part 2: Annotations, KWL chart, & 8 questions Part 3: Annotations, KWL chart, concept map, & letter to editor Homework: None 

What is due: Annotations- highlight and write notes as you read KWL chart- fill out what you “Know”, what you “Want” to know, and what you “Learn” 8 Questions- pgs. 6-7 Concept Map- key topics from the article to help frame your ideas for the letter Letter- Write a letter to the editor explaining: What are the factors involved in the dolphin die-offs? What actions does society need to take on this issue, if any? Why or Why not?

Friday, February 17th Objective: Agenda: Homework: I will be able to understand the impact that humans have on the environment. Agenda: Dolphin Case Study Part 1: Annotations & KWL chart Part 2: Annotations, KWL chart, & 8 questions Part 3: Annotations, KWL chart, concept map, & letter to editor Homework: Finish Dolphin Case Study- Due Monday!

What is due: Annotations- highlight and write notes as you read KWL chart- fill out what you “Know”, what you “Want” to know, and what you “Learn” 8 Questions- pgs. 6-7 Concept Map- key topics from the article to help frame your ideas for the letter Letter- Write a letter to the editor explaining: What are the factors involved in the dolphin die-offs? What actions does society need to take on this issue, if any? Why or Why not?