What are large flat plains located on the ocean floor? 1.Trenches 2.Mid-Ocean Ridges 3.Guyots 4....
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Transcript of What are large flat plains located on the ocean floor? 1.Trenches 2.Mid-Ocean Ridges 3.Guyots 4....
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