Geologists organized the geologic time scale based on _____.

• rock record
• evenly spaced time segments
• fossil record
• both a and c

Tags

NGSS.MS-ESS1-4

What is an index fossil?

• any fossil can be an index fossil
• a fossil that helps determine the age of rock layers
• a fossil that is only found in a small area
• a fossil of an organism that lived for millions of years.

Which shows the divisions of the geologic time scale from LEAST TO GREATEST?

• epoch, period, eon, era
• eon, era, period, epoch
• epoch, era, period, eon
• epoch, period, era, eon

Tags

NGSS.MS-ESS1-4

Which is true of the rock layers shown below?

• Only older rock contains fossils of complex life forms.
• Only younger rock contains fossils of simple life forms.
• Both older and younger rocks contain fossils of the most complex life forms.
• Only younger rock contains fossils of complex life forms.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

• A) older than
• B) the same age as
• C) younger than
• D) denser than

Tags

NGSS.MS-ESS1-4

• A) faults
• B) cross-cutting relationships
• C) original horizontality
• D) subduction

Tags

NGSS.MS-ESS1-4

• A) after
• B) at the same time as
• C) before

Tags

NGSS.MS-ESS1-4

• A) younger than
• B) the same age as
• C) older than
• D) similar to

Tags

NGSS.MS-ESS1-4

List each letter in order of how it occured. Oldest to youngest.

• H,G,E,D,C,B,A,I,F
• H,G,F,E,D,C,B,A,I
• A,B,C,D,E,F,G,H,I
• H,F,E,D,C,B,A,I

Tags

NGSS.MS-ESS1-4

• A) inclusions
• B) lateral continuity
• C) original horizontality
• D) superposition

Tags

NGSS.MS-ESS1-4