8th grade Study Guide for Quarter 2 Exam

Any method of determining whether an event or object is older or younger than other events or objects

The type of plate boundary where the plates are scrapping past each other, creating sheer-stress.

For your ER be ready to rank a geologic column using superposition and to explain how you know what goes where.

The remains of an organism that lived long ago, most commonly preserved in sedimentary rocks.

A principle that geologic processes that occurred in the past can be explained by current geologic processes.

The type of plate boundary where the plates are moving towards each other, colliding.

The type of plate boundary where the plates are moving AWAY from each other.

A break in the geologic record created when rock layers are eroded or when sediment stops being deposited.

A principle that states that younger rocks lie above older rocks if the layers have NOT been disturbed.

The weather conditions in an area over a long period of time.

A fossilized structure, such as a footprint, that formed in sedimentary rock by animal activity on soft sediment.