APES Unit 4 Review

Front

What is the most biologically active horizon in soil?

Back

The O horizon, which is made of a mixture of organic and mineral material.

Front

What is the rate at which water flows through soil called?

Back

Soil percolation or permeability.

Front

What is the process by which the ocean floor sinks beneath a deep-ocean trench?

Back

Subduction.

Front

What causes the Coriolis Effect?

Back

Earth rotating on its axis.

Front

In which layer of the atmosphere does ozone block UV radiation?

Back

Stratosphere.

Front

What is the definition of permeability in soil science?

Back

The ability of soil to transmit water and air.

Front

What is the role of the O horizon in soil?

Back

It is rich in organic material and supports plant life.

Front

What is the difference between porosity and permeability?

Back

Porosity is the volume of voids in soil, while permeability is the ability of those voids to transmit fluids.

Front

What is the significance of the stratosphere?

Back

It contains the ozone layer, which protects Earth from harmful UV radiation.

Front

What is continental drift?

Back

The movement of the Earth's continents relative to each other.