- Where are the deepest parts of the seafloor?
- How many tectonic plates are there?
- Where is the youngest ocean floor found quizlet?
- Where is the youngest seafloor in the Atlantic Ocean?
- What are the three types of seafloor spreading?
- What causes the ocean floor to deepen with age?
- What is the floor of the ocean?
- Which area is most likely to be the safest during a major earthquake?
- What happens when the seafloor spreads?
- Is it safe to be in a basement during an earthquake?
- Where are the oldest sediments found?
- Where is the youngest material in the seafloor found?
- Is it safe to be in a car during an earthquake?
- Where do most earthquakes occur on Earth?
- What are the evidence of seafloor spreading?
- What are 4 types of ocean floor?
- How old is the ocean floor?
- Where would you look in order to find the oldest rocks on Earth?
- Where is the oldest land on earth?
- Where would you be most likely to find the oldest rocks on Earth?
- Where would seafloor spreading most likely occur?
Where are the deepest parts of the seafloor?
The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S.
territorial island of Guam.
Challenger Deep is approximately 36,200 feet deep..
How many tectonic plates are there?
sevenhow many tectonic plates are there? There are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American.
Where is the youngest ocean floor found quizlet?
Youngest at mid-ocean ridge, oldest adjacent to the continents. The lithosphere makes up the ocean floor and the continental land masses, along with the uppermost portion of the mantle.
Where is the youngest seafloor in the Atlantic Ocean?
Where is the youngest seafloor in that ocean? The youngest seafloor is almost exactly in the middle of the Atlantic Ocean. The youngest ages extend the entire length down the center of the ocean basin.
What are the three types of seafloor spreading?
There are three types of plate-plate interactions based upon relative motion: convergent, where plates collide, divergent, where plates separate, and transform motion, where plates simply slide past each other.
What causes the ocean floor to deepen with age?
During seafloor spreading, lithosphere and mantle cooling, contraction, and isostatic adjustment with age cause seafloor deepening. … In addition, the cooling plate model explains the almost constant depth and heat flow observed in very old seafloor and lithosphere.
What is the floor of the ocean?
The seabed (also known as the seafloor, sea floor, or ocean floor) is the bottom of the ocean, no matter how deep. All floors of the ocean are known as ‘seabeds’.
Which area is most likely to be the safest during a major earthquake?
ANSWER: The area with loosely compacted soil is most likely to be the safest during a major.
What happens when the seafloor spreads?
Sea-floor spreading is what happens at the mid-oceanic ridge where a divergent boundary is causing two plates to move away from one another resulting in spreading of the sea floor. As the plates move apart, new material wells up and cools onto the edge of the plates.
Is it safe to be in a basement during an earthquake?
Given that your home will probably still be standing (though it certainly may be damaged) after the quake, the basement shouldn’t be any more dangerous than any other part of the house. Just duck under a table or desk like you would on the main floor.
Where are the oldest sediments found?
GreenlandEarth’s Oldest Sedimentary Rocks. Earth’s oldest sedimentary rocks, found in Greenland, are about 3.9 billion years old. Unusual chemical traces in these rocks may suggest that life existed when they formed.
Where is the youngest material in the seafloor found?
The youngest crust of the ocean floor can be found near the seafloor spreading centers or mid-ocean ridges. As the plates split apart, magma rises from below the Earth’s surface to fill in the empty void.
Is it safe to be in a car during an earthquake?
If an earthquake occurs while you’re driving, slow down, look for an open area to stop and pull over as soon as it is safe to do so • Avoid parking near or under bridges, overpasses, signs, building overhangs, power lines, trees, or any other hazard that might fall onto your car • Turn off the engine, set the parking …
Where do most earthquakes occur on Earth?
Most earthquakes occur along the edge of the oceanic and continental plates. The earth’s crust (the outer layer of the planet) is made up of several pieces, called plates. The plates under the oceans are called oceanic plates and the rest are continental plates.
What are the evidence of seafloor spreading?
Several types of evidence supported Hess’s theory of sea-floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves. This evidence led scientists to look again at Wegener’s hypothesis of continental drift.
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.
How old is the ocean floor?
about 200 million yearsThe oldest seafloor has been radiometrically dated to only about 200 million years (Duxbury et al. 2005:114), whereas continental rocks have been dated to four billion years, and the earth is thought to be about 4.6 billion years old (Dalrymple 2004).
Where would you look in order to find the oldest rocks on Earth?
The Nuvvuagittuq Belt on the coast of the Hudson Bay in Northern Quebec. Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks.
Where is the oldest land on earth?
Australia holds the oldest continental crust on Earth, researchers have confirmed, hills some 4.4 billion years old.
Where would you be most likely to find the oldest rocks on Earth?
That’s right, geologists, Canada is home to the world’s oldest discovered rocks! When the Earth was formed about 4.6 billion years ago, the molten rock on the surface hardened to form a solid crust.
Where would seafloor spreading most likely occur?
Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor. The Mid-Atlantic Ridge, for instance, separates the North American plate from the Eurasian plate, and the South American plate from the African plate.