Age of Rocks (Test on 5/5)

Fossils are found in...

• Sedimentary Rock

• Igneous Rock

• Metamorphic Rock

• Iron

Answer explanation

Fossils are found in sedimentary rock:

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Fossils

•  Are remains of once living organisms (plant or animal) that tell us clues about Earth’s past. 

• The age of rocks and geologic features COMPARED with other rocks and features nearby.

• In undisturbed rock layers, the OLDEST layer is at the BOTTOM.

•  Young sedimentary layers that form on top of older IGNEOUS or METAMORPHIC rock layers.

Answer explanation

Fossils are remains of once living organisms (plant or animal) that tell us clues about Earth’s past. 

- Fossils are typically found in sedimentary rock 

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What are remains of once living organisms (plant or animal) that tell us clues about Earth’s past. 

• Fossils

• Relative Age

• Noncomformity

• Unconformity

Answer explanation

Fossils are remains of once living organisms (plant or animal) that tell us clues about Earth’s past. 

- Fossils are typically found in sedimentary rock.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

True or False:

Relative age is just a comparison, not an exact number or age.

• True

• False

Answer explanation

Relative age is not an exact number or age.

Relative Age is...

• The age of rocks and geologic features COMPARED with other rocks and features nearby.

• Are remains of once living organisms (plant or animal) that tell us clues about Earth’s past. 

• In undisturbed rock layers, the OLDEST layer is at the BOTTOM.

• Matching rocks and fossils from separate locations.

Answer explanation

Relative Age is the age of rocks and geologic features COMPARED with other rocks and features nearby.

-Not an exact number or age.

Tags

NGSS.MS-ESS1-4

What is the age of rocks and geologic features COMPARED with other rocks and features nearby.

• Relative Age

• Superposition

• Fossils

• Uncomformity

Answer explanation

Relative Age is the age of rocks and geologic features COMPARED with other rocks and features nearby.

-Not an exact number or age.

Tags

NGSS.MS-ESS1-4

True or False: In in the principal of Superposition, the rock layers become progressively older towards the top.

• True

• False

Answer explanation

In in the principal of Superposition, the rock layers become progressively YOUNGER towards the top.

Tags

NGSS.MS-ESS1-4

What principal states that in undisturbed rock layers, the OLDEST layer is at the BOTTOM.

• Unconformity

• Superposition

• Noncomformity

• Cross-Cutting Relationships

Answer explanation

Superposition is when in undisturbed rock layers, the OLDEST layer is at the BOTTOM.

Tags

NGSS.MS-ESS1-4

Superposition is...

• When in undisturbed rock layers, the OLDEST layer is at the BOTTOM.

• Typically found in undisturbed rock.

•  When young sedimentary layers deposited on top of older horizontal layers that have been eroded.

• Matching rocks and fossils from separate locations.

Answer explanation

Superposition is when in undisturbed rock layers, the OLDEST layer is at the BOTTOM.

-Rocks become progressively younger towards the top.

Tags

NGSS.MS-ESS1-4

Inclusion is when...

• A piece of an older rock that becomes part of a new rock. 

• In undisturbed rock layers, the OLDEST layer is at the BOTTOM.

• Young sedimentary layers that form on top of older IGNEOUS or METAMORPHIC rock layers.

• Represent species that existed on Earth for a short length of time, were abundant, and inhabited many locations.

Answer explanation

Inclusion is when a piece of an older rock that becomes part of a new rock.

Tags

NGSS.MS-ESS1-4