6.2/6.3 Flashcard #1 Practice

Front

Epicenter

Back

The point on Earth’s surface directly above an earthquake’s starting point, or focus; where the earthquake is the strongest.

Front

How does sediment in the middle of the ocean compare to sediment that is farther away?

Back

Sediment in the middle of the ocean is younger.

Front

Which type of crust is more dense?

Back

Oceanic crust is more dense than continental crust.

Front

Which type of rock is most prominent in oceanic crust?

Back

Basalt is the most prominent rock in oceanic crust.

Front

Which type of rock is most prominent in continental crust?

Back

Granite is the most prominent rock in continental crust.

Front

What is the lithosphere?

Back

The lithosphere is a large, solid piece of the Earth's crust that moves slowly over time.

Front

What is the focus of an earthquake?

Back

The location within Earth along a fault at which the first motion of an earthquake occurs.

Front

What is sediment?

Back

Sediment is small particles of rock and minerals that accumulate over time.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is thinner and denser, while continental crust is thicker and less dense.

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.