Unit 1 - Evidence of Earth's History Vocabulary Quizizz 2024-25

outcrop

• the part of a rock formation that appears above the surface of the surrounding land
• When something cuts across a body of rock, that "something" is younger than the rock it cuts across.
• What forms Sedimentary?
• an impression of an organism in a rock left by an ancient organism

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Unconformity

• The age of a rock given as the number of years since the rock formed.
• the part of a rock formation that appears above the surface of the surrounding land
• indicates abundant plant life that was buried faster than it could decay
• A break in the geologic record created when rock layers are eroded or when sediment is not deposited for a long period of time.

Index Fossil

• The geologic principle that states that in horizontal layers of sedimentary rock, each layer is older than the layer above it and younger than the layer below it.
• The age of a rock given as the number of years since the rock formed.
• an era occurring between 570 million and 230 million years ago, characterized by the advent of fish, insects, and reptiles
• a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found

Tags

NGSS.MS-ESS1-4

cross cutting principle

• Earth's history as revealed by layers of rock
• When something cuts across a body of rock, that "something" is younger than the rock it cuts across.
• Oldest known fossils formed from many layers of bacteria and sediment.
• What forms sediments?

Tags

NGSS.MS-ESS1-4

relative age

• A break in the geologic record created when rock layers are eroded or when sediment is not deposited for a long period of time.
• a long period of time
• a violent, usually destructive, natural occurrence
• The age of a rock compared to the ages of rock layers

Tags

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absolute age

• The age of a rock given as the number of years since the rock formed.
• Molten rock beneath the earth's surface
• any period of time during which glaciers covered a large part of the earth's surface
• Forms from weathering and erosion, deposition, compaction and cementation

Law of Superposition

• The age of a rock given as the number of years since the rock formed.
• What forms magma?
• What forms sediments?
• The geologic principle that states that in horizontal layers of sedimentary rock, each layer is older than the layer above it and younger than the layer below it.

Tags

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extrusion

• geologic time period that began 65 million years ago and continues today (age of mammals)
• An igneous rock layer formed when lava flows onto Earth's surface and hardens.
• What forms sediments?
• Oldest known fossils formed from many layers of bacteria and sediment.

intrusion

• The geologic principle that states that in horizontal layers of sedimentary rock, each layer is older than the layer above it and younger than the layer below it.
• An igneous rock layer formed when magma hardens beneath Earth's surface.
• geologic time period that began 65 million years ago and continues today (age of mammals)
• a violent, usually destructive, natural occurrence

geologic time

• Earth's history as revealed by layers of rock
• A large extinction of species in a relatively short period of time
• Oldest known fossils formed from many layers of bacteria and sediment.
• the part of a rock formation that appears above the surface of the surrounding land

Tags

NGSS.MS-ESS1-4