U1M1 Final Exam Review

The principle of ____________ states that sedimentary rocks are deposited in horizontal layers

• Uniformitarianism

• Lateral Continuity

• Relative Dating

• Original Horizontality

Reorder the following: Youngest #1 to Oldest #5

• Igneous Intrusion Y

• Igneous Intrusion X

• Limestone

• Mudstone

• Shale

Answer explanation

The intrusions can only push through layers that are already there. The top layer had to come after the first intrusion Y since Y is not cutting through it.

Tags

NGSS.MS-ESS1-4

When part of the rock record is destroyed, the erosional GAP that forms is a(n) ____________.

• inclusion

• key bed

• unconformity

• superposition

What is one reason the presence of iridium leads scientists to hypothesize that a meteorite impact caused the mass extinction of dinosaurs?

• There are no fossils of dinosaurs in rocks below the iridium layer.

• Iridium is only common on Earth and is never found in meteorites.

• All dinosaur fossils contain iridium.

• There are no fossils of dinosaurs in rocks above the iridium layer.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-4

Time is made up of ​ (a)   intervals, while geologic time is made up of ​ (b)   intervals.

• even
• uneven

Tags

NGSS.MS-ESS1-4

The gap in the rock record that occurs between folded or uplifted rock layers and a sedimentary rock layer on top of them is called a(n)​ (a)  

• angular unconformity
• disconformity
• non-conformity

Tags

NGSS.MS-ESS1-4

Rock layers are correlated if they both contain the same ____.

• elements

• shapes

• fossils

• pore spaces

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Index fossils are used by geologist to relatively date other fossils and rock layers.

All of these are characteristics of INDEX FOSSILS except...

• Abundant (there were a lot of them)

• Widespread (found throughout the world)

• Lived for a short amount of time

• Lived for a long amount of time

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

When unconformities are found, geologist _____________, or match, rock layers from different areas.

• study

• correlate

• discuss

• erase

Which shows the divisions of the geologic time scale from least to greatest?

• epoch, period, eon, era

• epoch, period, era, eon

• eon, era, period, epoch

• epoch, era, period, eon

Tags

NGSS.MS-ESS1-4