Eaths And Sciences

Question 1

What are the two theories that make up plate tectonics?

Answer 1

characterize the seafloor and became a crucial factor in the acceptance of the theories of plate tectonics and continental drift.

Question 2

What is the continental drift?

Answer 2

DescriptionContinental drift is the theory that the Earth’s continents have moved over geologic time relative to each other, thus appearing to have “drifted” across the ocean bed.

Question 3

What was the name of the giant super continent?

Answer 3

Pangaea

Question 4

What are the moving areas called by geologists?

Answer 4

asthenosphere

Question 5

How did convection currents cause sea-floor spreading?

Answer 5

Seafloor spreading occurs at divergent plate boundaries.

Question 6

What is another name for the crust?

Answer 6

Lithosphere

Question 7

What causes the earths magnetic field?

Answer 7

caused by currents of electricity that flow in the molten core.

Question 8

Which is thicker the continental crust or oceanic crust?

Answer 8

Continental crust

Question 9

What is the Mid-Atlantic ridge?

Answer 9

DescriptionThe Mid-Atlantic Ridge is a mid-ocean ridge, a divergent or constructive plate boundary located along the floor of the Atlantic Ocean.