Seafloors Features
Submerged flat topped seamounts are known as
What is a Guyot
How many volcanoes are Active ?
1500 active volcanoes on the Earth.
What is the outer layer of the Earth?
The crust
What is latitude ?
North or south of the Equator.
What is ROV ?
Underwater ROVs (Remotely Operated Vehicles) are submersible, robotic systems, used to observe the depths of large bodies of water by operators from shore, or by divers in the water.
How deep is the seafloor ?
What is Mariana Trench , 36,200 ft
How are volcanoes formed?
Volcanoes are formed when magma from within the Earth’s upper mantle works its way to the surface.
How many layers are there in the Earth?
3
What is longitude ?
Longitude is a measurement of location east or west of the prime meridian
What is AUV ?
AUV stands for autonomous underwater vehicle and is commonly known as uncrewed underwater vehicle.
The flat ocean basin floor is flatter than any plan on land is called the ?
What is Abyssal Plain
What is the difference between lava and magma?
Magma is liquid rock inside a volcano. Lava is liquid rock (magma) that flows out of a volcano. Fresh lava glows red hot to white hot as it flows.
What is the depth of the inner core of the Earth?
2,900 kilo meters = 1,802 miles
What is prime Meridian ?
An imaginary line that runs through Greenwich, England and represents 0° longitude
What is UUV ?
Unmanned underwater vehicles (UUV), sometimes known as underwater drones, are submersible vehicles that can operate underwater without a human occupant
What is the Earth most common geographic feature ?
What is Continents and Oceans
What is the ring of fire ?
The Pacific Ring of Fire is an area of frequent earthquakes and volcanic eruptions encircling the basin of the Pacific Ocean. The Ring of Fire has 452 volcanoes and is home to over 50% of the world’s active and dormant volcanoes.
What materials make up the inner core?
Iron and Nickel
What is Greenwich Mean Time ?
The place from where all time zones are measured.
What is HOV ?
A human occupied vehicle (HOV), also known as manned submersible (MS) is one type of submersibles which can carry scientists, engineers, and various electronic devices and special equipment to arrive at various deep-sea complex.
What are Submarine Canyons ?
any of a class of narrow steep-sided valleys that cut into continental slopes and continental rises of the oceans.
Why do Volcanoes erupt ?
The friction causes earthquakes and volcanic eruptions near the edges of the plates.
What is the hardest part of Earth's layers ?
Lithosphere
What is Magnetic declination ?
the angle between magnetic north and true north.
When was the Bathysphere made ?
The Bathysphere was designed in 1928 and 1929 by the American engineer Otis Barton, to be used by the naturalist William Beebe for studying undersea wildlife.