Geologic Change

Front

What are the layers of the Earth in order from oldest to youngest?

Back

E, B, C, D, A

Front

How do sedimentary rock layers usually form?

Back

Horizontally

Front

What is the term for the length of time required for half of the radioactive atoms in a sample to decay?

Back

Half-life

Front

True or False: Catastrophic processes and Uniformitarian processes both play essential roles in Earth's history.

Back

True

Front

According to the law of superposition, where are the oldest fossils found?

Back

Near the bottom of the rock layers

Front

What is the principle that states younger layers of rock are deposited on top of older layers?

Back

Law of Superposition

Front

What type of rock is formed from the accumulation of sediment?

Back

Sedimentary rock

Front

What is the process called when rocks are broken down by weathering and erosion?

Back

Sedimentation

Front

What is the geological time scale?

Back

A system of chronological dating that relates geological strata to time.

Front

What is the difference between a catastrophe and uniformitarianism in geology?

Back

Catastrophism suggests that Earth's features are shaped by sudden, short-lived events, while uniformitarianism suggests that the same processes observed today have been occurring over long periods.