Sequencing Rock Layers

Look at the diagram, what layer did animal E first show up in?

• Layer #4

• Layer #5

• Layer #6

• Layer #8

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

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

• A

• B

• C

Tags

NGSS.MS-ESS1-4

Which layer is OLDER? Layer M or Intrusion P?

• Layer M

• Intrusion P

Tags

NGSS.MS-ESS1-4

Which layer is OLDER? Intrusion M or Layer D?

• Intrusion M

• Layer D

Tags

NGSS.MS-ESS1-4

Which fossil makes the best index fossil?

• ammonite

• brachiopod

• trilobite

• shark

• all four are good index fossils

What is the most recent event to happen?

• A

• B

• C

• D

The principle of superposition says

• that an intrusion of magma that cuts across rock layers is younger than those rock layers

• you can't determine the relative age of a rock layer if any part of it is missing

• rock pieces found inside another rock are older than the surrounding rock.

• the oldest rock layer is on the bottom and the youngest rock layer is on the top.

Tags

NGSS.MS-ESS1-4

Relative dating is...

• a rock piece found inside another rock

• a method of sequencing events in order

• a method of estimating the age of a rock in years

• the amount of time it tales for unstable atoms to decay

An unconformity is

• an inclusion found in rock

• the half-life of a radioactive element

• a rock formation with layers or parts of layers missing

• a sediment

Tags

NGSS.MS-ESS1-4

This scientist was responsible for creating a set of principles used in relative dating

• Alfred Wegener

• Benjamin Franklin

• Marie Curie

• Nick Steno