Use the space below to reflect upon our recent study of the physical components of the ocean (often referred to as simply "oceanography"). Direct your work below to the reality of tides, currents, waves, and perhaps even the general nature of the world's oceans. Also be certain to pay attention to the elements that make a good reflection, or argument. Ask yourself as you construct your response here: "does my contribution here extend or deepen the discussion as a whole?" And as always, metacognition is key. Uncovering your thinking at each step along the way is a very effective strategy for learning.
Also, in the thread below, add in a resource that you found on your own that helps not only you... but will also potentially help extend the understanding of your classmates. This additional resource might be an excellent image...
...that helped your understand of one or more of these concepts. Perhaps it is a link to an entire webpage devoted to one of the topics. (This link goes to a really cool children's book about the spilled plastic duckies that taught us a thing or two about ocean surface currents. Try reading it to a little sister, cousin or neighbor.) Maybe even a videoclip that does a good job of helping you visualize some of the more abstract concepts, or even takes your learning in directions you hadn't even foreseen...
Whatever you choose, do it up right in the space below...
Yes... that really is a super resource. Nice find. It is in my list as well. So what about your learning in this area? Check out the first part of the prompt about and flesh out your thinking a bit. What surprised you? What wasn't perhaps immediately clear? What made those things ultimately understandable to you? Had you been previously exposed to this field of information... or was this more or less a first exposure? Explain a bit more of what you now know, what you might not be perfectly clear about, or would want to know more about. Try to challenge yourself to reflect and truly make your thought processes transparent to the rest of us...
while reading on this website http://www.onr.navy.mil/focus/ocean/default.htm
i discoverd interesting things about the ocean. even though i already knew about how dolphins use sonar to comunicate and "see" , i had no idea how fast sound travels in water! apparently it travels 4,750 to 5,150 feet per second!!!! whats even more amazing is that the time that sound travels in water increases by seven feet per second whenever the temperature increases by 1 degreee F!!!!!!!!
im LOVING this website because it is soo informative on anything you would want to know about the oceans! :)
I knew about the sun and moon and how they affected the tides but I didn't know about what the ocean was made up of. The fact that the ocean has so little salt content compared to the chloride, sodium, sulfate, magnesium, calcium, potassium, and bicarbonate but can still taste so salty amazes me! I didn't know about gyres, as amazing as that sounds, and I also didn't know how they collected data from the ocean. I didn't know that The North Atlantic Current or The Gulf Stream existed but I can definitely now see how their can be different animals in different oceans and how they can have adapted to the different currents, weather patterns, and the different environments created. Scientists pay a lot of attention to the little parts and pieces of our oceans. I didn't know their was so much data being collected still today. I read somewhere that we know more about the surface of mars than we do our own oceans. While keeping this in mind I also know that 43% of all statistics are made up on the spot, probably including this one, but I believe that the mars thing is true and I think we should pay more attention to our surroundings. I also know that we have just discovered the Colossal Squid and several other species in our oceans. I have also studied wavelengths before but going over them was a nice refresher. I have one question though. Are there currents deep, deep in the ocean?
Really Ccool picture for the Coriolis Effect.
Click here for an awesome website full of small facts about the ocean.
This Video is really boring but it does help with the difference between spring and neap tides.
Currents exist at all depths in the ocean. There are much colder currents that travel below the warmer currents near the surface. Although the current system is complex, ocean currents are driven by two forces: the Sun and the rotation of the Earth. :)
It is pretty interesting that in one part of the ocean dolphins exist, and in another polar bears. Without the vast climates on earth, many living organisms wouldn't exist. That's another interesting part of this class, we're able to learn about all these differences and their affect on the Earth as a whole.
I found a diagram that shows another perspective on spring and neap tides that I thought helped me get a better grasp on the differences between tides. Even if you already understand, this is interesting to show a detail we don't usually cover when learning about the general concept of tides; just what the highs and low really are.
When people start talking about waves, tides, and currents; I start thinking of the moon. The moon is constantly in motion and our oceans are too. They kind of connect in that way. The ocean is in movement though because the moon is pulling on it. The picture I attached shows the us the temperature's of the oceans. I bet your wondering what temperatures have to do with waves and such. Ill tell you; It gives us observations about the speed and direction of currents and about the heat stored in the ocean, which will help us predict global climate variations! Other reasons are color variations, sea height, and winds. Tools they use to measure the currents, tides, and waves are buoys, drifters, and satellites. For those of you who do not know these terms ill explain. Ocean currents are continuous, directed movement of ocean water generated by the forces acting upon this mean flow, such as breaking waves, wind, Coriolis force, temperature and salinity differences and tides caused by the gravitational pull of the Moon and the Sun. Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth. Waves travel and transfer energy from one point to another, often with no permanent displacement of the particles of the medium—that is, with little or no associated mass transport. They consist of oscillations or vibrations around almost fixed locations.
I learned about the moons connection to the ocean as well! I found out that the side of the Earth that is closer to the moon has a higher water level because the attraction is greater. When the moon and sun are on the same side of the Earth the tidal stream is much stronger.
WOW! thats really cool , i wonder why the attraction is greater on the side of the Earth that is closer to the moon, and why is the tidal stream stronger when the moon and sun are on the same side as the earth!
Back in elementary school I remember learning that the moon effected the tides on Earth, but that's it. Whenever we began talking about this in class, I realized there is so much out there about the ocean that I DIDN'T know and that I didn't even know existed. It's so weird to think that about 2/3 of the Earth is covered by water, but most people know nothing about it. http://www.enchantedlearning.com/subjects/ocean/Waves.shtml this site really helped me with all things about the ocean. It amazed me that the wind TRANSFERS some of its energy that causes waves- the stronger the wind the larger the wave. I clicked the link at the top to find out why the ocean is salty- water picks up small amounts of minerals from river beds and flows into the oceans and seas. One cubic of water contains about 2.2 pounds of salt. I remember when I went to Hawaii in '08, salt water from the ocean got into my mouth. Knowing what I know now, there was quite a bit of salt in my mouth at that moment. Gross.