What are the features of seafloor spreading?

HomeWhat are the features of seafloor spreading?
What are the features of seafloor spreading?

Seafloor spreading happens at the bottom of an ocean as tectonic plates move apart. It forms new crust as the plates move away from each other. The new crust then slowly moves away from the ridge. It is a place of earthquakes and volcanos. Seafloor spreading helps explain continental drift in plate tectonics.

Q. What is seafloor spreading 6th grade?

In sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added. As a result, the ocean floors move like conveyor belts, carrying the continents along with them.

Q. What is seafloor spreading kid definition?

Seafloor spreading happens at the bottom of an ocean as tectonic plates move apart. It forms new crust as the plates move away from each other. The new crust then slowly moves away from the ridge. It is a place of earthquakes and volcanos. Seafloor spreading helps explain continental drift in plate tectonics.

The magnetic history of the earth is thus recorded in the spreading ocean floors as in a very slow magnetic tape recording, forming a continuous record of the movement of the ocean floors. Other supportive evidence has emerged from study of the fracture zones that offset the sections of the ridge.

Q. Which of the following is a result of sea floor spreading?

In sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added. As a result, the ocean floors move like conveyor belts, carrying the continents along with them. Yet some areas of the deep-ocean floor are teeming with life. One of these areas is the East Pacific Rise.

Q. What observations of the ocean floor supported the sea floor spreading hypothesis?

These observations are:

  • The seafloor has a large mountain range running through it. Deep trenches are found far from the ridges.
  • The magnetic polarity of the seafloor changes. The center of the ridge is of normal polarity.
  • The youngest seafloor is at the ridge. The oldest is farthest from the ridge.

Q. What is seafood spreading?

a process in which new ocean floor is created as molten material from the earth’s mantle rises in margins between plates or ridges and spreads out.

What is the importance of seafloor spreading?

Significance. Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere.

What evidence was presented by geologists in the 1960s that sea floor spreading actually takes place?

Seafloor spreading was proposed by an American geophysicist, Harry H. Hess in 1960. By the use of the sonar, Hess was able to map the ocean floor and discovered the mid-Atlantic ridge (mid-ocean ridge). He also found out that the temperature near to the mid-Atlantic ridge was warmer than the surface away from it.

Q. How ocean floor rocks and sediments are evidence of seafloor spreading?

2. Explain how ocean-floor rocks and sediments are evidence of seafloor spreading. BOTH SEDIMENT THICKNESS AND THE AGES OF OCEAN-FLOOR ROCKS INCREASE WITH DISTANCE FROM THE RIDGE. THESE DATA ARE CONSISTENT WITH NEW CRUST FROMING AT RIDGES AND BEING DESTROYED AT TRENCHES.

Seafloor spreading produces major characteristics of the seafloor – 1) the age of the seafloor is progressively older away from midocean ridges, 2) the elevation of the seafloor is progressively lower away from midocean ridges, 3) the magnetic history of the seafloor bears the striped-pattern of the Earth’s magnetic …

Q. Which of the following is a result of sea floor spreading quizlet?

Randomly suggested related videos:
Seafloor Spreading – Earth Science for Kids!

We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time – make sure you come back of…

No Comments

Leave a Reply

Your email address will not be published. Required fields are marked *