What are large flat plains located on the ocean floor?

1. Trenches 2. Mid-Ocean Ridges3. Guyots 4. Abyssal Plains

CRCT Question

Why didn’t the car feel

well?

It had GAS

Corny Joke of the Day

Monday: Ocean Floor notes and activities HW: Work on Activity #2

Tuesday: Activity 2 workday HW: Ocean Floor Worksheet, Work on Activity #2 Wednesday: Field Trip

HW: Work on Activity #2. Study for quiz Thursday: Activity #2 DUE. QUIZ. Demonstrations and salinity Lab HW: Study guide due MONDAY. Work on Activity

#3Friday: Activity 3 workdayHW: Study guide due MONDAY. Work on Activity

#3

Week at a Glance

Activity#1

Pros and Cons

Positives Most of you were

honest if you were missing some content

A lot of you did a great job with your creativity!

Concerns

Some things were hard to read

Some people did not follow the rubric

There were some that had a lot of content missing

The most abundant gas in the ocean is Hydrogen If there’s 1000 g of ocean water 3.5 of those grams

would be salt Salinity is the amount of dissolved salt in water There are more gases at the bottom of the ocean Oceanographers use seismic waves to study the

bottom of the ocean floor Volcanic activity is one way that salt is added to

ocean water. Evaporation decreases the salinity of ocean water. Our test is next Monday

Agree/Disagree

National Geographic “DRAIN THE

OCEAN”

How do we know what the ocean floor looks like?

Red Hat: What are your thoughts and feelings as your watch this?

White Hat: Find important Facts and information

Blue Hat: What questions to you still have after watching this

Green Hat: What ideas for your project did you get from watching this?

Orange hat: What facts did you already know?

Pick your Hat!

http://www.youtube.com/watch?v=VM9dNneEKAc

Drain the Ocean

Mapping the ocean floor1. SCUBA-Self contained breathing

apparatus. Makes humans able to breathe underwater

2. Sonar-uses sound waves to map the ocean floor

3. Submersibles-small vehicles that are designed for underwater exploration

4. Satellites-used for temperature, salinity, storm tracker, etc.

Sonar –(S0und Navigation

and Ranging)

Sonar tells us about the shape of the ocean floor

by sending sound waves to the ocean floor and

measuring how long it takes the energy to return.

This tells us the topography of the ocean floor. Do you remember

what topography is?

Ship using sonar and what it discovered.

Features of the Ocean Floor

Shoreline – a boundary where the land and the ocean meet

Continental margin – area where the underwater edge of a continent meets the ocean floor.

Continental shelf – relatively flat part of a continental margin that is covered by shallow ocean water

Continental slope – marks the boundary between the crust of the continent and the crust of the ocean floor.

Abyssal Plains – large flat areas on the ocean floor.

Seamounts and Guyots – scattered along the floor of the ocean are thousands of underwater mountains called seamounts. They are volcanic mountains that rise more than 1000 meters about the surrounding ocean floor. Flat top seamounts are called guyots.

Trenches – the greatest depths found along the edges of the ocean floor

Midocean ridge – mountain ranges on the ocean floor.

Volcanicisland

Also called a seamount!

Ocean Life Zones Intertidal zone – lies between the

low and high tide lines. Hard for living things to survive. –where we swim!

Neritic Zone – extends from the low tide line to the edge of the continental shelf. Rich in life. “Finding Nemo”

Open-Ocean Zone – bathyal and abyssal zones, no sunlight, plants do not grow, little food is available, most animals are small near the bottom. Big animals in the open ocean

Summary3-2-1

3 new vocabulary words you learned

2 facts you found interesting

1 question you still have