Relative Dating

Used to determine whether an object is older or younger than other objects

• Superposition
• Relative Dating
• Fossil
• Unconformity

Tags

NGSS.MS-ESS1-4

States that younger rocks lie above older rocks if the layers have not been disturbed

• Law of crosscutting
• Law of superposition
• Relative Dating
• Unconformity

Tags

NGSS.MS-ESS1-4

Traces or remains of organisms that lived long ago

• Fossil
• Unconformity
• Superposition
• Column

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Label the areas

b

d

e

fault

youngest layer

Inclusion

Oldest layer

intrusion

Tags

NGSS.MS-ESS1-4

How do geologists use relative dating?

• Placing rocks in order from youngest to oldest
• Placing rocks in order by minerals they contain
• Classifying rocks by different textures
• Classifying rocks by different isotopes

Tags

NGSS.MS-ESS1-4

Match the geological principles with their descriptions:

• The principle that if one feature such as a fault cuts across another feature.

• Cross-cutting relationship

• The principle that layers of sediment are originally deposited horizontally under the action of gravity.

• Original Horizontality

• The principle that in a sequence of undisturbed sedimentary layers, the oldest layers are at the bottom.

• Lateral Continuity

• The principle that layers of sediment initially extend laterally in all directions.

• Superposition

Tags

NGSS.MS-ESS1-4

Which sequence correctly represents the order of formation from earliest to latest?

• Basalt, Limestone, Fault, Siltstone

• Siltstone, Basalt, Fault, Limestone

• Limestone, Siltstone, , Fault, basalt

• Fault, Limestone, Siltstone, Basalt

Tags

NGSS.MS-ESS1-4

Relative dating of rock layers tells us that the deeper we dig, _______.

• the younger the rocks get
• the smellier the rocks get
• the harder the rocks get
• the older the rocks get

Tags

NGSS.MS-ESS1-4

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers
• The age of fossils
• The relative age of rock layers
• the super powers of rocks

Tags

NGSS.MS-ESS1-4

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

Tags

NGSS.MS-ESS1-4