Earth's HIstory

Front

What is the main method scientists use to determine the age of the Earth?

Back

Absolute and relative dating of rocks and fossils and the fossil record.

Tags

NGSS.MS-ESS1-4

Front

What does 'relative age' indicate about rock layers or fossils?

Back

The age of one rock layer or fossil compared to another.

Tags

NGSS.MS-ESS1-4

Front

What is an example of relative age?

Back

Saying you are older than your sister.

Front

Which era are we currently living in?

Back

Cenozoic Era.

Front

In which time period did jellyfish first appear?

Back

Precambrian Time.

Tags

NGSS.MS-LS4-1

Front

What is absolute dating?

Back

A method used to determine the exact age of a rock or fossil, often using radioactive decay.

Tags

NGSS.HS-PS1-8

Front

What is the fossil record?

Back

The history of life on Earth as documented by fossils.

Tags

NGSS.MS-LS4-1

Front

What is the significance of the Precambrian Time?

Back

It is the earliest part of Earth's history, covering about 88% of Earth's timeline.

Tags

NGSS.MS-ESS1-4

Front

What are fossils?

Back

Remains or traces of ancient organisms preserved in rock.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What is the difference between absolute and relative dating?

Back

Absolute dating provides a specific age, while relative dating places events in order without exact dates.