Relative Age of Rocks

The diagram shows a cross section of rocks beside a highway. 
Which rock type is the oldest?

• rock type 1

• rock type 2

• rock type 3

• rock type 4

Tags

NGSS.MS-ESS1-4

In the diagram which rock lasyer is probably the oldest?

• layer 1

• layer 2

• layer 5

• layer 6

Tags

NGSS.MS-ESS1-4

Which statement best describes the Law of Superposition?

• Each sedimentary layer of rock represents 1000 years of Earth's age, much like the rings of a tree.

• In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers

• In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks

• Rocks that form near volcanoes are older than surrounding rock.

Tags

NGSS.MS-ESS1-4

Scientific law that states in horizontal sedimentary rock, the oldest layers are at the bottom

• intrusion

• fault

• index fossil

• superposition

Tags

NGSS.MS-ESS1-4

The geologic cross section diagram shows undisturbed rock layers with index fossils from two regions (A and B). The two index species are identified in the index fossil key. Which answer option correctly describes the relative ages of the rock layers in the diagram?

• • Layer 6 is older than Layer 3.
  • Layer 2 is younger than Layer 4.

• • Layer 6 is older than Layer 3.
  • Layers 2 and 4 are the same age.

• • Layer 6 is younger than layer 3.
  • Layers 2 and 4 are the same age.

• • Layer is younger than layer 3.
  • Layer 2 is older than layer 4.

Tags

NGSS.MS-ESS1-4

The geologic cross section diagram shows undisturbed rock layers with index fossils from two regions (A and B). The two index species are identified in the index fossil key. Which answer option correctly describes the relative ages of the rock layers in the diagram?

• • Layer 6 is older than Layer 3.
  • Layer 2 is younger than Layer 4.

• • Layer 6 is older than Layer 3.
  • Layers 2 and 4 are the same age.

• • Layer 6 is younger than layer 3.
  • Layers 2 and 4 are the same age.

• • Layer is younger than layer 3.
  • Layer 2 is older than layer 4.

Tags

NGSS.MS-ESS1-4

What is the oldest layer in the outcrop?

• B

• C

• D

• E

Tags

NGSS.MS-ESS1-4

The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?

• Fossil A and C are the same age
  

• Fossil B is older than fossil C

• Fossils A is older than fossil B

• Fossil D is older than fossil C

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which rock layer is the youngest?

• A

• B

• D

• F

Tags

NGSS.MS-ESS1-4

An intrusion is always ___________ than the rock layers around it and beneath it

• younger

• older

Tags

NGSS.MS-ESS1-4