Open the links below in a new tab and play "Scatter" or "Space Race" with BOTH sets. Please do not spend more than five minutes on each (ten minutes total).
Fish - caudal fins, mouths, body shapes and coloration
Unit 7 Fish Words and concepts including harvesting
Friday, August 29, 2014
We talked about the fossil record and how evidence shows whales changing from land mammals to sea mammals over millions of years and how you can observe the small changes in skeletal structure changing over time.
Wednesday, August 27, 2014
Global water movement is important for oxygen and nutrient distribution, but also has major impacts on migration of animals and weather patterns.
Tuesday, August 26, 2014
Upwelling is when cold nutrient-rich water comes up to the surface. It is fed by deepwater currents hitting land and rising to the surface. These areas have cold water that is full of nutrients, so there is heaps of plankton, and as a result lots of fish and other marine life.
There are two known upwelling spots in California on either side of Monterrey Bay, shown in blue and purple on the map. There are elephant seal and sea lion rookeries (hang outs) at both of these spots because there is plenty of food for the seals and sea lions and their babies to eat.
Students are working on mapping upwelling and then answering questions about the data gathered from a particular day. If this is not finished in class tomorrow, then it will be homework for the students.
Monday, August 25, 2014
Today the class was spent working independently on the seafloor features surrounding the United States and reading and answering questions about underwater vehicles. Submarines are larger than submersibles and carry more people and can go longer distances. ROVs and AUVs are robots like remote-controlled cars, but go underwater. ROV's have a tether (cord) connecting them to power and AUVs do not.
Friday, August 22, 2014
TED talk by David Gallo that is more recent. Gallo's talk showed the organisms in more accurate color and in motion. His talk also showed some amazing footage of cephalopods like cuttlefish and octopus performing magical feats of mimicry and camouflage. You should definitely follow the link and watch this video stream.
His talk was based on research by Dr. Widder. We looked at some of her photos and you can learn more about her work and see her presentation here.
When it comes to deep sea creatures - some bioluminesce and some don't. People are fascinated with the gulper eel, a four foot long eel that has a HUGE jaw. It has such a big mouth so that it can eat anything it comes in contact with because in the deep ocean, meals may be far and few between. More information about the gulper eel and other deep sea creatures can be found at Sea & Sky's Website.
Thursday, August 21, 2014
Sailors have known about some of these currents for a very long time. Early explorers knew it took less time to go to Europe from North America and not the other way, even if they didn't know it was the slightly warmer, slightly faster Gulf Stream that was carrying them along. Scientists who study currents have historically dropped stuff into the ocean and recorded where it has turned up. Yes, those messages in a bottle can be useful.
Curtis Ebbesmeyer is one of the leading oceanographers in current research and he doesn't drop any bottles. Instead he tracks cargo that is lost overboard from large container ships in trans-oceanic crossings. He started with a cargo of Nike sneakers, but has also worked with plastic ducks (pictured), legos. pumice from volcanic eruptions, and wooden barrels. Mr. Ebbesmeyer is most famous for his research on the plastic ducks. Although many ducks, beavers, turtles, and frogs have been recovered, oceanic currents are carrying them further still...
listen to the podcast here.
excellent website with more information and some nifty graphics. We will continue to discuss this in class.
Wednesday, August 20, 2014
Tuesday, August 19, 2014
Water is 800 times more dense than air, so underwater, pressure increases dramatically. Pressure increases one atmosphere with every ten feet of depth, so all you need to do is dive down the deep end of the pool and you will feel an increase in pressure to two atmospheres (one for the water, and one for the air)
Scientists think it is funny to take styrofoam deep into the ocean because the pressure underwater will squeeze the air out of the styrofoam and "shrink it." Really it is just compressed and more dense. Here is a photo of what happens to styrofoam wig-heads and cups when taken down a few thousand feet, a change of several atmospheres of pressure. Ms J has some styrofoam cups (donated by a former student) that went 12,000 feet down on a submarine that are very similar. They used to be 12oz cups and now they are only about 4 inches high.
We did a quick demo lab with plastic cups and water to demonstrate how pressure increases with depth.
Friday, August 15, 2014
Thursday, August 14, 2014
60* 5' 22" N
For extra credit (up to five people), tell me where they were hiking.
Students have been reviewing safety rules by looking over a cartoon and trying to figure out what the people were doing correctly and incorrectly. They also had to identify the rule numbers (which is a lot more effort). We discussed why safety rules are important and how they are helpful.
Students have also gotten an introduction to oceanography. We discussed the salinity of the ocean (an average of 35 parts per thousand) and the pH (the ocean has a pH of 8, which is basic).
Tuesday, August 12, 2014
In class, each student will receive a course syllabus and safety rules. They need to be read and signed by both the student and parent guardian. The course syllabus outlines what the course will be like, what topics will be covered, and course expectations. It also contains contact information. There will be a quiz on this syllabus and classroom procedures on Friday. The Safety Test (with a bit of latitude and longitude) will be Monday.
The safety rules are rules designed to keep the classroom safe and orderly to maximize learning and prevent accidents and injuries. These rules need to be studied because there will be a safety test on Monday and infractions of these rules can lead to disciplinary action as well as low assignment grades. A breakage sheet is a contract holding students accountable for the items that are broken if the student is acting a manner that is unsafe for themselves or those around them.
Please have these papers signed and returned as soon as possible. Students not returning signed safety rules and breakage sheets will not be able to participate in labs and activities until the contracts are signed and returned.
Monday, August 11, 2014
My best friend has been featured on "Great White Highway" that is sometimes shown during Shark Week. EEEK! If you see her she's that red pony tail right in the center. Mel has been studying elephant seals, a favorite prey item on the great white shark.
Check it out here.
This is a cool interactive http://dsc.discovery.com/sharks/shark-anatomy.html
Computer Lab Etiquette
You are in the computer lab to do work for this class. If you are not doing work, then we will have problems.
Do not pack up early. Work until the bell or until MsJ says.
SAVE OFTEN. And if you save to a key, also save it to your number. If you lose it, you will have to do it again.
If MsJ asks for your attention, stop what you are doing and listen to what she has to say.
You may watch videos about your organism through reliable websites.
You may listen to music through the computer if you have your own headphones. Rule1 MsJ cannot hear it. You get one warning. Rule2 Turn it on and listen – no million clicks and constant changing. Take both ear phones out when MsJ is talking.