Unit 3

Front

What is Isostasy?

Back

The Earth's crust and mantle are in a state of gravitational balance, adjusting to the weight of overlying materials.

Front

What is Fracture deformation?

Back

When rock deforms and breaks apart.

Front

What is a Caldera?

Back

A large volcanic crater formed by a major eruption leading to the collapse of the mouth of the volcano.

Front

What is an Focus?

Back

The true origin of an earthquake.

Front

What is Convection?

Back

Heat transfer through the movement of a fluid, where warmer, less dense fluid rises and cooler, denser fluid sinks.

Front

What is the difference between the Earth's crust and mantle?

Back

The crust is the outermost layer of the Earth, while the mantle is the layer beneath the crust, composed of semi-solid rock.

Front

What causes earthquakes?

Back

Earthquakes are caused by the sudden release of energy in the Earth's crust, often due to tectonic plate movements.

Front

What is a tectonic plate?

Back

A tectonic plate is a massive slab of solid rock that makes up the Earth's lithosphere and moves over the semi-fluid asthenosphere.

Front

What is the Ring of Fire?

Back

The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.

Front

What is magma?

Back

Magma is molten rock located beneath the Earth's surface, which can erupt as lava during a volcanic eruption.