Geology Flashcard

Front

What is the mantle?

Back

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

Front

What is the outer core?

Back

The outer core is a liquid layer composed mainly of iron and nickel, located beneath the mantle and above the inner core, responsible for Earth's magnetic field.

Front

What is soil horizon?

Back

Soil horizons are distinct layers in soil that differ in composition, color, and texture, typically including topsoil, subsoil, and parent material.

Front

What is topsoil?

Back

Topsoil is the uppermost layer of soil, rich in organic matter and nutrients, and is crucial for plant growth.

Front

What is the significance of decaying organic matter in soil?

Back

Decaying organic matter enriches topsoil, providing nutrients for plants and improving soil structure.

Front

What is the process of weathering?

Back

Weathering is the breakdown of rocks and minerals into smaller particles through physical, chemical, or biological processes.

Front

What is the role of acids in rock weathering?

Back

Acids can chemically break down minerals in rocks, leading to their dissolution and the formation of soil.

Front

What is a volcanic eruption?

Back

A volcanic eruption is the release of magma, gas, and ash from a volcano, which can shape the landscape and affect the environment.

Front

What is plate motion?

Back

Plate motion refers to the movement of the Earth's tectonic plates, which can cause earthquakes, volcanic activity, and the formation of mountains.

Front

What is the importance of measuring soil layers?

Back

Measuring soil layers helps determine the composition and characteristics of the soil, which is essential for agriculture and environmental studies.