Geological Time

The geological time scale was developed to represent

• The revolutionary history of Earth

• The revolutionary history of Fossils

• The revolutionary history of Rocks

Tags

NGSS.MS-ESS1-4

Law of Superposition states

• Younger rocks are on bottom, Older rocks are on top

• Oder rocks are on bottom, Younger rocks are on top

• Rocks are spread out evenly

Tags

NGSS.MS-ESS1-4

The Earth is how old

• 3.5 Billion years old

• 3.6 Billion years old

• 4.5 Billion years old

• 4.6 Billion years old

Tags

NGSS.MS-ESS1-4

Principle of original horizontality

• States that sedimentary rocks are originally laid down in vertical layers

• States that sedimentary rocks are originally laid down in horizontal layers

• states that sedimentary rocks are originally laid down in diagonal layers

Tags

NGSS.MS-ESS1-4

Fire rocks from volcanoes

• Igneous

• Sedimentary

• Metamorphic

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

A rock changed from other rocks by heat and pressure

• Igneous

• Sedimentary

• Metamorphic

Tags

NGSS.MS-ESS2-2

Rocks that are pressed under water for many years

• Igneous

• Sedimentary

• Metamorphic

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What helps geologists match rock layers, and determine the relative ages of the rocks.

• Index fossils

• fossil fuels

• Index rocks

Tags

NGSS.MS-ESS1-4

rocks form from lava at the surface of the Earth

• extrusive

• intrusive

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Rocks that form from the inside of Earth

• extrusive

• intrusive

Tags

NGSS.MS-ESS2-1