Where is the youngest ocean floor found quizlet?
The YOUNGEST seafloor rocks are found CLOSE TO the mid-ocean ridge. The OLDEST seafloor rocks are found FAR AWAY FROM the mid-ocean ridge.
How is the age distribution pattern of the Hawaiian Islands Emperor seamount chain explained by the position of the Hawaiian hotspot?
The volcanoes in the Hawaiian Island-Emperor Seamount chain get progressively older as one heads northwestward from Hawaii. These age relationships suggest that the Pacific Plate has been steadily moving northwestward, while the underlying mantle plume has remained relatively stationary.
What was the main reason scientist objected to Alfred Wegener’s idea of continental drift?
The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.
Which of the following is the main reason the Earth has a magnetic field?
On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.
Where is the youngest seafloor located?
the mid-ocean ridge Where is the youngest ocean floor located? The youngest ocean floor is located on the mid-ocean ridge.
Do youngest part of the ocean floor is found?
mid-ocean ridges The youngest rocks in the ocean floor are located at the mid-ocean ridges.
Which Hawaiian Island is the youngest?
On the Island of Hawai'i, the youngest of the main Hawaiian Islands, Kīlauea and Mauna Loa are historically the two most active volcanoes, with frequent eruptions.
Which Hawaiian Island is the oldest?
History of Kauai: The Oldest Hawaiian Island
- Kauai, also known as the “Garden Island” is Hawaii's oldest main island. …
- Similar to the other Hawaiian Islands, Kauai was formed over a period of millions of years through volcanic activity.
What do you understand by the theory of continental drift discuss the prominent evidences in its support?
The theory deals with the distribution of the oceans and the continents. According to Wegener's Continental Drift theory, all the continents were one single continental mass (called a Super Continent) – Pangaea and a Mega Ocean surrounded this supercontinent. The mega ocean is known by the name Panthalassa.
Are continents still moving?
The plates are always moving and interacting in a process called plate tectonics. The continents are still moving today. Some of the most dynamic sites of tectonic activity are seafloor spreading zones and giant rift valleys.
What is the order of Earth’s magnetic field?
Solution : The order of magnitude of earth. s magnetic field is `10^(-4)T`. In CGS unit, it is 1 gauss. <br> So, `1G=10^(-4)T`.
Which of the following relation is correct for Earth magnetic field and frequency of magnetic needle?
In earth's magnetic field Bh if the frequency of oscillation of a magnetic needle is n then n² ∝ Bh.
Which is the youngest ocean?
The Southern Ocean, geologically the youngest of the oceans, was formed when Antarctica and South America moved apart, opening the Drake Passage, roughly 30 million years ago. The separation of the continents allowed the formation of the Antarctic Circumpolar Current.
Where is the youngest and oldest oceanic crust?
The youngest oceanic rocks are at the oceanic ridges, and they gets progressively older away from the ridges.
Which of the following is the youngest ocean?
The Indian Ocean is the smallest, geologically youngest, and physically most complex of the world's three major oceans (the others being the Pacific and Atlantic). Although it first opened some 140 million years ago, almost all of the Indian Ocean basin is less than 80 million years old.
Where is the youngest part of the ocean?
mid-ocean ridges 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.
Which island is the youngest?
Surtsey on November 30, 1963, 16 days after the beginning of the eruption. A volcanic eruption which took place off the southern coast of Iceland on October 14, 1963 led to the formation of the island of Surtsey.
Why is Hawaii the youngest island?
One way to determine the age of the islands is by marking their relative positions. The islands that have inched the furthest northwest are considered the oldest. The Big Island, the biggest island in Hawaii and the United States, is the southeasternmost island, and therefore the youngest.
What’s the youngest Hawaiian island?
On the Island of Hawai'i, the youngest of the main Hawaiian Islands, Kīlauea and Mauna Loa are historically the two most active volcanoes, with frequent eruptions.
What were the pieces of evidence and observations of Wegener that support continental drift explain and give an example each?
Wegener used fossil evidence to support his continental drift hypothesis. The fossils of these organisms are found on lands that are now far apart. Grooves and rock deposits left by ancient glaciers are found today on different continents very close to the equator.
What is continental drift theory Slideshare?
1. Continental Drift And Alfred Wegener. PANGAEA 'ALL LAND' Alfred Wegener • Alfred Wegener said that all of the continents were once together as one land mass, which he named Pangaea, which means “all land”. • This land mass broke apart into separate continents about 20 million years ago.
What will Earth look like in 50 million years?
This is the way the World may look like 50 million years from now! If we continue present-day plate motions the Atlantic will widen, Africa will collide with Europe closingthe Mediterranean, Australia will collide with S.E. Asia, and California will slide northward up the coast to Alaska.
Will Australia and Asia collide?
Australia is also likely to merge with the Eurasian continent. "Australia is moving north, and is already colliding with the southern islands of Southeast Asia," he continued.
Where is the most magnetic place on Earth?
the poles Intensity: The magnetic field also varies in strength over the earth's surface. It is strongest at the poles and weakest at the equator.
Which of the following is correct for Earth’s magnetic field is BH horizontal component of Earth’s magnetic field and is angle of dip?
Answer. answer: At a place Be is the earth's magnetic field and BH is its horizontal component. If at that place is the dip angle, then ratio of Be to BH is secδ.
Which of the following relation is correct for Earth magnetic field?
In magnetism we know that I2=V2+H2.
Where can we find the youngest part of the ocean?
mid-ocean ridges 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.
Where is the youngest seafloor found?
the Mid-Atlantic Ocean Ridge Where plates move apart, new crustal material is formed from molten magma from below the Earth's surface. Because of this, the youngest sea floor can be found along divergent boundaries, such as the Mid-Atlantic Ocean Ridge.
What is the youngest ocean?
The Indian Ocean is the smallest, geologically youngest, and physically most complex of the world's three major oceans (the others being the Pacific and Atlantic). Although it first opened some 140 million years ago, almost all of the Indian Ocean basin is less than 80 million years old.
Which crust is youngest?
oceanic crust The youngest crust (shown in red) is near mid ocean ridges and spreading zones. All three rock types in the earth's crust—igneous, sedimentary, and metamorphic—can also be recycled back to their original molten magma form. This process occurs when oceanic crust is pushed back into the mantle at subduction zones.