Evolution and 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

Tags

NGSS.HS-ESS1-5

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

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

Tags

NGSS.MS-ESS1-4

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

Tags

NGSS.HS-PS1-8

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 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

A process that can preserve entire organisms.

• trace fossil
• mold fossil
• preserved fossil
• cast fossil

A fossil that is a solid copy of an organism's shape, formed when minerals seep into a mold.

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

One of three long units of geologic time between Precambrian and the present.

• evolution
• period
• geologic time scale
• era

Tags

NGSS.MS-ESS1-4

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

• vertebrate
• carbon film
• invertebrate
• fossil

Tags

NGSS.MS-LS4-1