What are deep ocean trenches quizlet?
Ocean trenches are deep sections of the ocean where an oceanic plate is usually sinking below a continental plate. They are formed in the subduction zone as the denser oceanic plate is subjected under the continental plate. Only $2.99/month. When was the Mariana trench formed?
What lives in the deep ocean trenches?
The three most common organisms at the bottom of the Mariana Trench are xenophyophores, amphipods and small sea cucumbers (holothurians), Gallo said.
Where are deep-sea trenches found?
Deep-sea trenches generally lie seaward of and parallel to adjacent island arcs or mountain ranges of the continental margins. They are closely associated with and found in subduction zones—that is, locations where a lithospheric plate bearing oceanic crust slides down into the upper mantle under the force of gravity.
What are the deepest trenches in the world?
- Mariana Trench. Located in the western Pacific Ocean, the Marina Trench is considered to be the deepest part of the Earth’s surface.
- Tonga Trench.
- Philippine Trench.
- Kuril- Kamchatka Trench.
- Kermadec Trench.
- Izu-Ogasawara Trench.
- Japan Trench.
- Puerto Rico Trench.
What happens to oceanic crust at a deep-ocean trench?
What happens to oceanic crust at a deep-ocean trench? At a deep-ocean trench, the oceanic crust bends downward. In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep-ocean trenches.
What evidence supports the theory of seafloor spreading?
Abundant evidence supports the major contentions of the seafloor-spreading theory. First, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge.
Is a deep ocean trench an underwater mountain?
A deep-ocean trench is an underwater MOUNTAIN. Molten material erupts INSIDE the central valley of mid-ocean ridges.
What are 4 types of ocean floor?
Features of the ocean floor include the continental shelf and slope, abyssal plain, trenches, seamounts, and the mid-ocean ridge. The ocean floor is rich in resources. Living things on the ocean floor are used for food or medicines.
What do the side slits represent?
The side slits stand for where subduction has occurred and the ocean floor has sunk in. Also, the space under the paper stands for the oceanic crust of the Earth.
What is beneath the ocean?
The seabed (also known as the seafloor, sea floor, or ocean floor) is the bottom of the ocean, no matter how deep.
How many ships are at the bottom of the ocean?
Some of the traces of the travelers, warriors or merchants have found their final resting place on the bottom of oceans, rivers and lakes. An estimated 3 million shipwrecks are spread across ocean floors around the planet. Some of these wrecks are thousands of years old and can provide precious historical information.
What happens if you bring a deep sea fish to the surface?
Pressure is decreased as the fish is brought to the surface allowing these gasses to expand. The dissolved gasses in the tissues will come out of solution and form small bubbles. These bubbles can be seen in the eyes and scales of many fish. They are small and the biggest thing you are likely to notice is bulging eyes.
Can you survive at the bottom of the ocean?
(2) There’s no air. You can’t breath at the bottom of the ocean. If you can’t breath, your body won’t stay alive for more than about 30 minutes. The pressure from the water would push in on the person’s body, causing any space that’s filled with air to collapse.
Why can’t humans survive deep down in the ocean?
The deep sea is a very difficult place to live. There is no light, it’s cold, there’s not much oxygen and little food – and, as you rightly point out, the creatures that live there have to deal with the enormous pressure of the water above.
What is the creepiest fish in the world?
Here are five of the creepiest fish out there.
- Goblin shark.
- Giant isopod.
- Angler fish.
- Black swallower.
- Frilled shark.
How many dead bodies are in Lake Michigan?
“After being towed by the steamer Aurora, the Dows began taking on water and finally slipped beneath the windswept lake at 2:30 p.m. It still rests there today.” It is estimated that more than 10,000 vessels have sunk and approximately 30,000 people have perished on Lake Michigan over the years.
What is the largest wave ever recorded on Lake Superior?
On Oct. 24, 2017, the NOAA lake buoys recorded 29-foot high short-period waves on Lake Superior north of Marquette, Michigan. These are the highest waves ever reported on the Great Lakes.
What is the largest fish caught in Lake Michigan?
Yellow perch
Can a dead body float in Lake Superior?
Normally, bacteria decaying a sunken body will bloat it with gas, causing it to float to the surface after a few days. But Lake Superior’s water is cold enough year-round to inhibit bacterial growth, and bodies tend to sink and never resurface.