The History of Planet Earth (MS-LS4-1, ESS1-4)

Front

What are the two main methods used for determining the age of rocks and fossils?

Back

Relative and Absolute Dating.

Front

In undisturbed sedimentary rock layers, where are the youngest layers located?

Back

At the top.

Front

According to the law of superposition, which layer is the youngest in a sequence of sedimentary rock layers?

Back

The top layer.

Front

How do scientists describe the changes in living organisms throughout geological time?

Back

Organisms have become more complex and diverse.

Front

What happened to life on Earth after the asteroid impact that wiped out the dinosaurs?

Back

Life changed dramatically, as new species became abundant.

Front

What is Relative Dating?

Back

A method used to determine the age of rocks and fossils by comparing their placement in layers.

Front

What is Absolute Dating?

Back

A method used to determine the exact age of a rock or fossil, often using radiometric techniques.

Front

What is the Geologic Time Scale?

Back

A timeline that organizes Earth's history into different periods based on significant geological and biological events.

Front

What does the term 'fossil' refer to?

Back

The preserved remains or traces of ancient organisms.

Front

What is the significance of sedimentary rock layers in geology?

Back

They provide a record of Earth's history and the sequence of events over time.