ES - Chapter 10

A hollow area in sediment in the shape of all or part of an organism is called a

• mold

• cast

• trace fossil

• carbon film

Geologists use the _ to date the events in Earth's long history by the use of eras and periods.

Tags

NGSS.MS-ESS1-4

The time it takes for half of a radioactive element's atom's to decay is a(n)

• era

• relative age

• half-life

• absolute age

Tags

NGSS.HS-PS1-8

The geologic time scale is subdivided into

• relative ages

• absolute ages

• unconformities

• eras and periods

Tags

NGSS.MS-ESS1-4

An animal that doesn't have a backbone is called a(n)

• vertebrate

• mammal

• invertebrate

• amphibian

A dinosaur footprint in rock is an example of a trace fossil.

• True

• False

Tags

NGSS.MS-LS4-1

A carbon film is a fossil in which minerals have replaced all or part of an organism.

• True

• False

Tags

NGSS.MS-LS4-1

A _ is a fossil in which minerals have replaced all or part of an organism.

A relative age of something is the exact number of years since an event has occurred.

• True

• False

A _ of something is the exact number of years since an event has occurred.

Tags

NGSS.MS-ESS1-4