11.3 Flashcard - Earthquakes and Tsunami Hazards

Front

What is shearing?

Back

Shearing is stress that pushes masses of rock in opposite directions, causing a sideways movement.

Front

What type of stress pulls on and thins an area of Earth's crust?

Back

Tension is the type of stress that pulls on and thins an area of Earth's crust.

Front

What is stress in geological terms?

Back

Stress is a force that acts on rock to change its shape or volume.

Front

What is a fault?

Back

A fault is a break in Earth's crust along which rocks move.

Front

What can be created when a plate is compressed?

Back

Mountains and valleys can be created when a plate is compressed, forming anticlines and synclines.

Front

What is tension?

Back

Tension is a type of stress that stretches and pulls apart rocks.

Front

What are anticlines and synclines?

Back

Anticlines are upward folds in rock layers, while synclines are downward folds.

Front

What happens during an earthquake?

Back

An earthquake occurs when stress on rocks exceeds their strength, causing them to break and move.

Front

What is a tectonic plate?

Back

A tectonic plate is a large section of Earth's crust that moves and interacts with other plates.

Front

What is the relationship between stress and earthquakes?

Back

Stress builds up in rocks until it is released as an earthquake.