Oceanography Plate Tectonics

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer of the Earth's mantle located below the lithosphere, where convection currents occur.

Front

How does the age of the ocean floor relate to seafloor spreading?

Back

The age of the ocean floor increases with distance from the mid-ocean ridge, providing evidence for seafloor spreading.

Front

What is Earth's inner core made of?

Back

Earth's inner core is a dense ball of solid iron and nickel.

Front

What are the layers of Earth in order from the surface?

Back

The correct order of Earth's layers from the surface is: crust, mantle, outer core, inner core.

Front

What type of plate boundary formed the Himalayas?

Back

The Himalayas are an example of a convergent plate boundary.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle.

Front

What is a divergent plate boundary?

Back

A divergent plate boundary is where two tectonic plates move away from each other, often resulting in seafloor spreading.

Front

What is a transform plate boundary?

Back

A transform plate boundary is where two tectonic plates slide past each other horizontally, causing earthquakes.

Front

What is convection in the context of plate tectonics?

Back

Convection in plate tectonics refers to the movement of the mantle caused by the heat from the Earth's core, driving the movement of tectonic plates.

Front

What is the mantle?

Back

The mantle is the thick layer of rock between the Earth's crust and outer core, composed of silicate minerals.