2024 Unit 2 Plate Tectonics & Rock Cycling

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Front

What is the mantle?

Back

The mantle is the layer of the Earth located between the crust and the outer core, composed of semi-solid rock that flows slowly.

Front

What are the layers of the Earth from the surface to the center?

Back

The layers of the Earth from the surface to the center are: Crust, Mantle, Outer Core, Inner Core.

Front

What is an extrusion in geology?

Back

An extrusion is a geological structure that forms when lava erupts onto the Earth's surface and hardens.

Front

What is the difference between lava and magma?

Back

The difference between lava and magma is location: magma is found beneath the Earth's surface, while lava is magma that has erupted onto the surface.

Front

What is the crust?

Back

The crust is the outermost layer of the Earth, consisting of solid rock and soil.

Front

What is the outer core?

Back

The outer core is a liquid layer of the Earth located beneath the mantle and above the inner core, composed mainly of iron and nickel.

Front

What is the inner core?

Back

The inner core is the solid innermost layer of the Earth, composed primarily of iron and nickel, and is extremely hot.

Front

What is a fault in geology?

Back

A fault is a fracture or zone of fractures between two blocks of rock, allowing for movement and displacement.

Front

What is a rift valley?

Back

A rift valley is a lowland region formed by the divergence of tectonic plates, characterized by steep walls and a central block.