Earth Sci: Unit 3 Test Review (Dating & Geologic Time)

The age of a rock given as the number of years since the rock formed.

• relative age
• half-life
• absolute age
• radioactive decay

The age of a rock compared to the ages of other rocks.

• relative age
• half-life
• absolute age
• radioactive decay

The process in which the nuclei of radioactive elements break down, releasing fast-moving particles and decay.

• relative age
• half-life
• absolute age
• radioactive decay

The time it takes half of the atoms of a radioactive element to decay

• relative age
• half-life
• absolute age
• radioactive decay

A fossil in which minerals replace all or part of an organism.

• trace fossil
• mold fossil
• petrified fossil
• cast fossil

A type of fossil that provides evidence of the activities of ancient organisms.

• trace fossil
• mold fossil
• petrified fossil
• cast fossil

A type of fossil that is a hollow area in sediment in the shape of an organism or part of an organism.

• trace fossil
• mold fossil
• petrified fossil
• cast fossil

Preserved remains or traces of an organism that lived in the past.

• vertebrate
• carbon film
• invertebrate
• fossil

A record of the geologic events and life forms in Earth's history.

• index fossil
• half-life
• radioactive dating
• geologic time scale

Tags

NGSS.HS-ESS1-6

Fossils of widely distributed organisms that lived during a geologically short period.

• index fossil
• half-life
• radioactive dating
• geologic time scale