Relative Age of Rocks Review

What are fossils that are abundant, easily recognizable, short lived, and widespread called?

• Preserved fossils

• Index fossils

• Imprints

• Radioactive dating

The Law of Superposition states….

• Younger rocks layers are on top of older rock layers

• Fossils are found in sedimentary rocks

• Older rock layers are on top of younger rock layers

• Absolute age dating

Tags

NGSS.MS-ESS1-4

What two methods are used for determining the age of rocks and fossils?

• 1. Relative and Absolute Dating

• Carbon and Water Dating

• 1. Sedimentary and Igneous Rocks

• Spatial and Layered Dating

Tags

NGSS.MS-ESS1-4

A hardened layer of lava on Earth's surface

• Fault

• Extrusion

• Intrusion

• Unconformity

Which of the fossils is the oldest?

• Trilobite

• Fish

• Plant

• Mammal

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What is a break in the earths crust?

• Fault

• Extrusion

• Intrusion

• Unconformity

What does relative age tell us about a rock layer or fossil?

• The age of one rock layer or fossil compared to another.

• The relative age of a fossil determined by radiometric dating

• Younger rock layers sit on top of older rock layers

• 
  Older rock layers sit on top of younger rock layers

Tags

NGSS.MS-ESS1-4

 A hardened layer of of magma beneath Earth's surface

• Fault

• Extrusion

• Intrusion

• Unconformity

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

• intrusion

• fault

• index fossil

• superposition

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

• younger

• older

Tags

NGSS.MS-ESS1-4