History of Planet Earth pre-test

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed rock layers, the oldest layers are at the bottom and the newer layers are on top.

Front

What does comparative anatomy provide evidence for?

Back

Comparative anatomy provides evidence for the evolution of organisms, indicating that some organisms come from the same ancestor.

Front

Which fossil is considered the best index fossil?

Back

The trilobite is considered the best index fossil because it was widespread and existed for a relatively short period of time.

Front

What does the Law of Cross-Cutting state about faults?

Back

The Law of Cross-Cutting states that a fault is younger than the rocks it cuts through.

Front

Is evolution a theory of slow change over long periods of time?

Back

False. Evolution is a theory that describes how species change over time, but it can occur rapidly in some cases.

Front

What is an index fossil?

Back

An index fossil is a fossil that is used to define and identify a particular time period in the geological time scale.

Front

What is the significance of the Law of Inclusions?

Back

The Law of Inclusions states that any rock fragments that are included in another rock must be older than the rock they are included in.

Front

How do scientists use fossils to understand Earth's history?

Back

Scientists use fossils to understand Earth's history by studying the types of organisms that existed at different times and how they evolved.

Front

What is the principle of uniformitarianism?

Back

The principle of uniformitarianism states that the processes that shaped the Earth in the past are the same as those we observe today.

Front

What is the difference between relative age and absolute age?

Back

Relative age is the age of a rock or fossil in comparison to other rocks or fossils, while absolute age is the actual age in years.