Fossils and Rock Strata

A gap in the sequence of sedimentary rock layers caused by erosion.

• Inclusion

• Unconformity

• Cross-cutting

• Isotope

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What scientific law tells us that if one rock layer contains pieces or fragments of another rock layer, then the fragments will be older than the rock layer that surrounds it.

• Cross-cutting

• Original Horizontality

• Unconformities

• Inclusions

When determining absolute age, what is the term used for the amount of time it takes for half of the atoms in a sample of a radioactive element to decay into atoms of another element.

• Half-life

• Radioactive decay

• Radiometric dating

• Decomposition rate

Tags

NGSS.HS-PS1-8

What scientific law tells us that if one rock layer crosses over other layers, then that layer of rock will be younger than any rock layers that it crosses?

• Cross-cutting

• Original Horizontality

• Unconformities

• Inclusions

List from youngest to oldest

• ECADB

• CABED

• BADCE

• BDACE

Tags

NGSS.MS-ESS1-4

List from youngest to oldest

• BAECD

• DCEAB

• CEABD

• ACEDB

Tags

NGSS.MS-ESS1-4

According to the law of superposition, which layer is the youngest?

• A

• B

• C

Tags

NGSS.MS-ESS1-4

Correctly sequence the layers of rocks oldest to youngest 

• C,E,D,A,B

• C,E,D,A,B

• C,E, D,B,A

Tags

NGSS.MS-ESS1-4

Correctly sequence the layers of rocks oldest to youngest 

• A,D, C, B, E

• E, B,C D, A

• B,E,C, D, A

Tags

NGSS.MS-ESS1-4

When scientists used half-life, radiometric dating or carbon dating, what are they trying to determine about geological artifact?

• Relative age

• Sequential age

• Approximate age

• Absolute age