Unit 3 HW 2

Front

Fossils are found in which part of rock layers according to the law of superposition?

Back

Near the bottom of the rock layers.

Front

What does the law of superposition help scientists determine?

Back

The relative age of rock layers.

Front

Which organism appeared last: Gastropod, Trilobite, Crinoid, Fern, or Ammonite?

Back

Fern.

Front

According to the law of superposition, which layer is the youngest: A, B, or C?

Back

A.

Front

Ferns appeared on Earth ____________ coral.

Back

after.

Front

What is the definition of the law of superposition?

Back

A geological principle stating that in undisturbed rock layers, the oldest layers are at the bottom and the youngest are at the top.

Front

What is a fossil?

Back

A preserved remains or traces of ancient organisms.

Front

What is the significance of studying fossils?

Back

Fossils provide information about the history of life and past environments on Earth.

Front

What type of rock is most commonly associated with fossils?

Back

Sedimentary rock.

Front

What is relative dating in geology?

Back

Determining the age of rocks and fossils in relation to one another.