Geological Timescale and Extinction

The end of life for a group of organisms, usually a species, is called a(n) ________________.

• Extinction

• Retirement

• Endangerment

• Catastrophe

Tags

NGSS.MS-LS4-1

Which fossil is the youngest?

• fossil A

• fossil B

• fossil C

• fossils A and B are the same age

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Determines the “relative” order of past events but not the absolute age.

• Absolute age

• Relative age

• Real age

• New age

Uses the decay of radioactive elements to find the ___________________________ of a rock or fossil.

• Relative age

• Absolute age

• New age

• Real Age

Tags

NGSS.HS-PS1-8

The end of life for a group of organisms, usually a species and the end of a geologic time (Era)

• Extinction

• Retirement

• Endangerment

• Catastrophe

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What percentage of organisms went extinct during the ordovician-Silurian extinction

• 50

• 65

• 86

• 95

Tags

NGSS.MS-LS4-1

A mass extinction that included the disappearance of all dinosaur species occurred during the ____.

• Precambrian

• Cenozoic era

• Mesozoic era

• Paleozoic era

Tags

NGSS.MS-LS4-1

The graph shows the change in marine families over the geological time scale.

What most likely happened 250 million years ago that altered the population of marine animals?

• Continuous heavy rainfall increased the level of water in the oceans.

• Gases from massive volcanic eruptions made ocean waters acidic.

• Melting glaciers post-ice age increased the number of water bodies.

• Continental drift increased breeding areas by connecting two massive oceans.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

How many large mass extinctions have there been in Earth's history?

• Three

• Five

• Seven

• Ten

Tags

NGSS.MS-LS4-1

Which era ended in the largest mass extinction on the time scale?

• Paleozoic

• Mesozoic

• Cenozoic

• Precambrian

Tags

NGSS.MS-ESS1-4