EAS SEM A 2023 Final Exam/Semester Test Review

Front

What is the principle of cross-cutting relationships?

Back

The principle of cross-cutting relationships states that a geological feature (such as a fault or intrusion) that cuts through another feature is younger than the feature it cuts.

Front

What is the difference between oceanic crust and continental crust?

Back

Oceanic crust is thinner, denser, and younger than continental crust, which is thicker, less dense, and older.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer of the upper mantle located below the crust that allows for the movement of tectonic plates.

Front

What force is responsible for keeping planets in orbit around the sun?

Back

Gravity is the force that pulls planets into a curved path when they are orbiting the sun.

Front

What does it mean for an orbit to be eccentric?

Back

An eccentric orbit means that the orbit is slightly oval-shaped rather than a perfect circle.

Front

How does the age of oceanic crust compare to continental crust?

Back

Oceanic crust tends to be younger than continental crust because it is continuously produced at mid-ocean ridges.

Front

What is the significance of mid-ocean ridges in plate tectonics?

Back

Mid-ocean ridges are underwater mountain ranges where new oceanic crust is formed through volcanic activity.

Front

What is the role of subduction zones in the recycling of crust?

Back

Subduction zones are areas where one tectonic plate is being forced under another, leading to the recycling of oceanic crust.

Front

Define gravity in the context of planetary motion.

Back

Gravity is the attractive force between two masses, which in the context of planetary motion, keeps planets in orbit around the sun.

Front

What is the relationship between tectonic plates and earthquakes?

Back

Earthquakes often occur at the boundaries of tectonic plates due to the movement and interaction of these plates.