TuesdayFebruary 19, 2013

(Ocean Life)

Compare Points A and B in terms of the following characteristics:

The Launch PadTuesday, 2/19/13

surface temp

depth temp

surface salinity

depth salinity

surface density

depth density

AB

A higher

same

B higher

varies

A lower

same

Announcements

Happy Chocolate Mint Day!

AnnouncementsI will be available after

school today until 4:45.

Assignment Currently Open

Summative or

Formative?Date Issued Date Due Date Into

GradeSpeedFinal Day

Quiz 18 S3 2/8 2/8 2/11 2/25WS – Ocean

Temperature and Density

F15 2/13 2/15 ? FRIDAY

Quiz 19 S4 2/15 2/15 ? 3/1

Recent Events in ScienceRussia Meteor Blast Is Biggest in 100 Years

Read All About It!www.space.com/19822-russian-fireball-biggest-explosion-century.html

The dramatic fireball that exploded over Russia on Friday, Feb. 15 was apparently

the biggest such blast in more than a century, scientists say.

The object that caused the Russian fireball, which damaged hundreds of buildings and

wounded perhaps 1,000 people in the Chelyabinsk region, was originally probably about 50 feet (15 meters) in diameter and

weighed roughly 7,000 tons, said Peter Brown, director of the Center for Planetary Science and Exploration at the University

of Western Ontario in Canada.From multiple sensors using multiple

technologies, a best initial estimate of the total energy of the event is

about 300 kilotons of TNT-equivalent, Brown said, though he stressed that the number could change as scientists learn

more.

www.youtube.com/watch?v=ANm_4k7OLDk

www.youtube.com/watch?v=dBvotWfR3j4

Ocean LifeThe marine

environment is inhabited by a wide

variety of organisms. Most of these

organisms live within the sunlit surface

waters.Many are

photosynthetic.

Ocean LifeClassification of

marine organisms Plankton (floaters) include

all marine organisms – algae (phytoplankton), animals (zooplankton), and bacteria – that drift

with ocean currents.Most of Earth’s biomass

consists of plankton adrift in the ocean.

Phytoplankton - Algae

Zooplankton - Animals

Photosynthetic Bacteria

Ocean LifeClassification of

marine organisms Nekton (swimmers) include all animals capable of moving

independently of the ocean currents, by swimming or other

means of propulsion.

Nekton – Great Reef Shark

Nekton - Squid

Nekton – Blue Tang

Nekton – Moray Eel

Ocean LifeClassification of

marine organisms Benthos (bottom

dwellers) describe organisms living on or in

the ocean bottom.A great number of

species exist on the shallow coastal floor, but

most live in perpetual darkness in deep water.

Benthos – Sea Star

Benthos – Yellow Tube Sponge

Benthos – Green Sea Urchin

Benthos – Coral Crab

WorksheetOcean Life

Video

DisneyNatureOceans(Part 5)