Review for Unit 7 & 8 Test

Which of the following organizes the divisions of geologic time from longest to shortest?

• eons, eras, periods, epochs

• epochs, periods, eras, eons

• periods, eons, epochs, eras

• eras, epochs, eons, periods

Tags

NGSS.MS-ESS1-4

Which of the following is used as evidence to construct the geologic time scale?

• fossils

• radiometric age data

• comparative studies of different rock sequences

• all of the above

Tags

NGSS.MS-ESS1-4

Which of the following is NOT a division of geologic time?

• eons

• periods

• generations

• epochs

Tags

NGSS.MS-ESS1-4

Which of the following is NOT a Precambrian eon?

• Hadean

• Phanerozoic

• Archean

• Proterozoic

Tags

NGSS.MS-ESS1-4

Iridium is an element that is common in meteors bur very rare on Earth. An iridium layer 65.5 million years old has been discovered in rock layers in many different locations all over the world. For which of the following hypotheses does this discovery provide evidence?

• The supercontinent Pangaea began to break apart during the Mezozoic Era.

• A glaciation event caused the mass extinction that marks the end of the Ordovician period.

• An impact event caused the mass extinction that marks the end of the Cretaceous period.

• The "Cambrian Explosion" that marks the evolution of complex organisms happened at the beginning of the Phanerozoic eon.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which of the following would be an example of evidence that could be used to construct the geologic time scale?

• a geologic event observed in different rock sequences around the world

• index fossils

• radiometric dating of rocks in an impact crater

• all of the above

Tags

NGSS.MS-ESS1-4

In which time period are we currently living?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Dinosaurs, small mammals, and birds are found in this time period.

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

What are fossils that are abundant, easily recognizable, short lived, and widespread called?

• Preserved fossils

• Index fossils

• Imprints

• Radioactive dating

The Law of Superposition states

• Younger rocks layers are on top of older rock layers

• Fossils are found in sedimentary rocks

• Older rock layers are on top of younger rock layers

• Absolute age dating

Tags

NGSS.MS-ESS1-4