ElevateK12 History of the Earth

Scientists have been able to create a ​ (a)   of Earth's history by studying layers of rocks called ​ (b)   .

• strata
• timeline

Tags

NGSS.MS-ESS1-4

Changes in rock layers show evidence of ​ (a)   and ​ the types (b)  

• Earth’s rotation around the sun

• the temperature of the core of the Earth

• when the universe formed

• organisms that lived at different times
• of environments that have existed over time

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

MS-ESS1.C The geologic time scale interpreted from rock strata provides a way to organize Earth's history. Analyses of rock strata and the fossil record provide only relative dates, not an absolute scale. On the following diagram, which rock layer is the oldest?

• D

• G

• A

• B

• C

Tags

NGSS.MS-ESS1-4

MS-ESS1.C The geologic time scale interpreted from rock strata provides a way to organize Earth's history. Analyses of rock strata and the fossil record provide only relative dates, not an absolute scale. Using the following diagram to determine which rocks are oldest and youngest is referred to as ___?

• Absolute Dating

• Relative Dating

• Ordering

• Scaling

Tags

NGSS.MS-ESS1-4

The age of the Earth is __________.

• 4.6 billion years old

• 3.6 billion years old

• 5.6 million years old

• 4.6 trillion years old

Tags

NGSS.MS-ESS1-4

Use the geologic time scale to match the following:

• Quaternary

• This is the current time period

• Permian

• This time period ended just after 250 million years ago, when approximately 96% of aquatic organisms died off

• Triassic

• This is the era where dinosaurs were common, between 230 million years and 65 million years ago

• Mesozoic

• This time period is where mammals first arose, around 235 million years ago

• Archean

• This eon ended around the time when oxygen began to accumulate in the atmosphere, around 2.5 billion years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

Scientists have sufficient evidence to suggest that we are currently in our 6th mass extinction due to ​ (a)   and ​ (b)   .

• human activity
• climate change

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS4-1

Match the following:

• fossil

• 2 half-lives

• 25%

• 1 half-life is

• 50%

• Radioactive substances can be used to measure the age of a/an

• Carbon-14

• This can be used to measure decay or organic material

• isotope

• A radioactive substance is also known as a/an

Tags

NGSS.HS-PS1-8

In the following diagram, the fossils in which layer are the youngest?

• layer A

• layer B

• layer C

• layer D

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

The geologic time scale interpreted from rock strata provides a way to organize Earth's history. Analyses of rock strata and the fossil record provide only relative dates, not an absolute scale.

• True

• False

Tags

NGSS.MS-ESS1-4