2/24/12 A/B DayLEQ: How do we classify marine, or ocean organisms that live in the hydrosphere?

1. What is polarity?2. What is cohesion?3. What is adhesion?4. Give one example of cohesion.5. Give one example of adhesion.

Today’s LEQ: How do we classify marine, or ocean organisms that live in the hydrosphere?

By the end of today, you should be able to…

1. Compare and contrast saltwater and freshwater

2. Identify the three different types of organisms that live in marine environments

3. Classify organisms as benthos, plankton, or nekton

Focus Vocabulary

112. Salinity113. Hydrosphere114. Benthos115. Plankton116. Nekton

Compare and contrast:

Draw this in your notes:Saltwater Freshwater

Unscramble!• Example: Pacific Ocean• Used for drinking and irrigation (watering

crops)• 97% of earth’s total water• Example: icebergs, glaciers, rivers, lakes,

snow• has salinity (salt is dissolved into it)• Covers 71% of earth’s surface• Only 3% of earth’s total water

Salt Water:

• 97% of earth’s total water• has salinity (salt is dissolved

into it)• Covers 71% of earth’s surface• Example: Pacific Ocean

Freshwater:

• Only 3% of earth’s total water• Used for drinking and

irrigation (watering crops)• Example: icebergs, glaciers,

rivers, lakes, snow

BOTH:

• Make up the

hydrosphere!

Video:

Discovery Education:

Freshwater versus Saltwater

Where we are headed….

Today: Saltwater

Next Class: Freshwater

GROUP: BENTHOS

Definition:

Pictures:

Examples:

Three Pages: Benthos, Plankton, and Nekton

Gallery Walk:

1. Copy down the definition of each type of marine life.

2. Draw the pictures of the marine life in your notebook!

3. LEAVE THE “EXAMPLES” portion blank—we will fill this in together

Video:

Discovery Education

Benthos, Plankton, and Nekton

GROUP: BENTHOSEx: Kelp

GROUP: BENTHOSEx: Sponges

GROUP: BENTHOSEx: Snails

GROUP: BENTHOSEx: Algae

GROUP: BENTHOSEx: Starfish

GROUP: BENTHOSEx: Clams

GROUP: PLANKTONEx: Krill

GROUP: PLANKTONEx: Jellyfish

GROUP: PLANKTONEx: Algae

GROUP: NEKTONEx: Fish

GROUP: NEKTONEx: Whale

GROUP: NEKTONEx: Seal

GROUP: NEKTONEx: Shrimp

GROUP: NEKTONEx: Octopus

Pick 5 characters. In 5-7 sentences, classify the following organisms as benthos, plankton, or nekton. EXPLAIN WHY you classified each character the way you did!

Summarizer:

How do we classify the different organisms that live in saltwater environments?

(Please write 4-6 sentences to answer this question—include all important vocabulary and examples!!)

Let’s Review!

Which of the following lists the layers of the earth, in order from MOST DENSE to LEAST DENSE?

a. inner core, outer core, mantle, crustb. crust, mantle, inner core, outer corec. outer core, inner core, mantle, crustd. inner core, outer core, crust, mantle

The best evidence that two land masses were once connected is the discovery that both land masses…

a. have the exact same climateb. exist on the same line of latitudec. have similar types of rocks and fossilsd. are in the same stage of the rock cycle

Which of the following statements provides the best explanation for why Greenland, which is in the arctic, has fossils of tropical plants?

a. Greenland was once located near the equator and had a tropical climateb. plants carried seeds from the tropics to Greenlandc. Earth was once entirely tropicald. the fossils were carried to Greenland by ocean convection currents

A plant fossil is found on the eastern coast of Brazil. An identical fossil from the same time period is found in western Africa. What is used to explain this?

a. seeds from plants were carried by marine lifeb. very few plants existed in the time periodc. plant fossils are too similar to tell one species from the otherd. the land areas from which the fossils came have moved apart over time

Which of the following best describes the theory of continental drift?

a. Pangaea makes oceans seem larger than they areb. Pangaea will exist at some time in the futurec. Pangaea broke apart due to convection currentsd. Pangaea never existed

What is happening in this diagram?

a. Pangaeab. core movementc. convection currentsd. continental theory

This diagram represents which of the following?

a) Subduction boundaryb) Convergent boundaryc) Divergent boundaryd) Transform boundary

Mountain ranges, like the Himalayas for example, are formed by which kind of plate boundary?

a) Subduction boundaryb) Convergent boundaryc) Divergent boundaryd) Transform boundary

Off the coast of South America, a plate of dense oceanic crust collides with a plate of less dense continental crust. What happens at the boundary of these plates?

a) The oceanic crust is forced to sink below the continental crustb) The continental crust is forced to sink below the ocean crustc) The oceanic and continental crust both sink below the lithosphered) The oceanic and continental crust are forced up to form mountains

A

B

C

D