Geologic Time and Fossil Records

Miss Kerr introduces the geologic time scale, reviewing previous notes on absolute and relative age. She explains the divisions of geologic time into eras and periods, detailing the Cenozoic, Mesozoic, Paleozoic, and Precambrian eras. The video discusses the fossil record's role in marking geologic time and provides pronunciation guidance for various periods. This is part 1 of the tutorial, with part 2 covering the geologic time scale based on a 24-hour clock.

What is the main purpose of the geologic time scale?

• To measure the distance between planets

• To show important life forms and events in Earth's history

• To calculate the age of the universe

• To predict future geological events

Which era are we currently living in?

• Mesozoic

• Paleozoic

• Precambrian

• Cenozoic

What is the Cenozoic era known for?

• The formation of the first continents

• The first appearance of fish

• The dominance of mammals

• The age of dinosaurs

How many periods is the Mesozoic era divided into?

• Two

• Three

• Five

• Four

What does the term 'Mesozoic' mean?

• Recent life

• Middle life

• Ancient life

• New life

Approximately how long did the Paleozoic era last?

• 100 million years

• 200 million years

• 400 million years

• 300 million years

What does 'Paleozoic' mean?

• New life

• Middle life

• Ancient life

• Recent life

What percentage of Earth's history does the Precambrian era cover?

• 95%

• 50%

• 75%

• 88%

What is the significance of the fossil record in geology?

• It shows the distance between continents

• It helps predict future earthquakes

• It provides evidence of different time periods

• It measures the age of the universe

Which era is known for the Cambrian explosion?

• Paleozoic

• Cenozoic

• Precambrian

• Mesozoic