8th Science Fossils Review

Most fossils form in ________ rock.

• igneous

• sedimentary

• precambrian

• ice core

Tags

NGSS.MS-LS4-1

_________ decay is when the atom of one element breaks down into another.

• radioactive

• carbon dioxide

• half life

• weathering

Tags

NGSS.HS-PS1-8

_______ is the breaking apart of rock into smaller pieces.

• ice core

• unconformity

• Intrusion

• Weathering

The earliest age on Earth is called the __________ Period, when the Earth formed and small organisms began to appear.

• Precambrian

• Mesozoic

• Paleogene

• Uh - Ah

Tags

NGSS.MS-ESS1-4

A(n) _________ fossil is used to match the relative age of rock layers in different areas.

• trace

• young

• index

• old

Tags

NGSS.MS-ESS1-4

When you compare the age of one fossil to the age of another, you are giving its _________ age. (older than/younger than)

• half life

• relative

• absolute

• index

When you give the number of years old a fossil is, you are giving its ________ age.

• index

• half life

• relative

• absolute

Magma that rises up through layers of rock and cools under Earth's surface is a(n) _________.

• intrusion

• extrusion

• index

• igneous

Lava and magma that rises up and cools above Earth's surface, forming a layer of rock, is called a(n) ___________.

• fossil

• igneous

• intrusion

• extrusion

The Law of ___________ states that the deep layers of rock are older than the rock above them.

• Superposition

• Gravity

• fossils

• Land

Tags

NGSS.MS-ESS1-4