Earth Science Skills Practice

Front

What is the definition of Longitude?

Back

Longitude refers to the lines that run vertically on a map, indicating how far east or west a location is from the Prime Meridian.

Front

What is the definition of Latitude?

Back

Latitude refers to the lines that run horizontally on a map, indicating how far north or south a location is from the Equator.

Front

What is a Half-Life in terms of radioactive decay?

Back

A Half-Life is the time required for half of the parent isotope in a sample to decay into its daughter isotope.

Front

What percentage of the parent isotope remains after 2 Half Lives?

Back

25% of the parent isotope remains after 2 Half Lives.

Front

What does it mean if an intrusion is younger than surrounding rock layers?

Back

It means that the intrusion formed after the surrounding rock layers were deposited.

Front

What is the significance of the Equator?

Back

The Equator is the line of 0 degrees latitude, dividing the Earth into the Northern and Southern Hemispheres.

Front

What is the definition of a Geologic Column?

Back

A Geologic Column is a representation of the layers of rock and fossils in a specific area, showing their relative ages.

Front

What is the difference between a parent isotope and a daughter isotope?

Back

A parent isotope is the original radioactive isotope that undergoes decay, while a daughter isotope is the product of that decay.

Front

What does it mean if a statement about half-lives is TRUE or FALSE?

Back

A statement about half-lives is TRUE if it accurately describes the decay process; otherwise, it is FALSE.

Front

What is the Prime Meridian?

Back

The Prime Meridian is the line of 0 degrees longitude, serving as the starting point for measuring longitude.