What are large flat plains located on the ocean floor? 1.Trenches 2.Mid-Ocean Ridges 3.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 #3 Friday: Activity 3 workday HW: Study guide due MONDAY. Work on Activity #3 Week at a Glance

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!

Drain the Ocean

Mapping the ocean floor 1.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.

Volcanic island

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

Summary new vocabulary words you learned 2 facts you found interesting 1 question you still have