Chapter 14

Radiometric dating is possible because the rates of decay of radioactive isotopes _____.

• change over time
• change from place to place
• are constant
• vary widely

Tags

NGSS.HS-PS1-8

Which layer is the oldest and youngest?

• C and B
• C and E
• D and E
• A and B

Tags

NGSS.MS-ESS1-4

Which era is the longest?

• Cenozoic
• Cambrian
• Precambrian
• Phanerozoic

Tags

NGSS.MS-ESS1-4

Which period are we currently in?

• Quaternary
• Holocene
• Jurassic
• Tertiary

Tags

NGSS.MS-ESS1-4

The geologic time scale is a record of....

• the history of fossils only
• the history of rocks
• the history of rock layers and fossils
• geologist notes

Tags

NGSS.MS-ESS1-4

Paleontologists infer that the earth is approximately how many years old?

• 4.5 million years
• 450 million years
• 450 billion years
• 4.5 billion years

Tags

NGSS.MS-ESS1-4

In which time period are we currently living?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Preserved remains of plants and animals from the remote past are called?

• Sedimentary rocks

• Radioactive dating

• Decayed organisms

• Fossils

Tags

NGSS.MS-LS4-1

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

What does absolute age tell us about a rock layer or fossil?

• The 'exact' age of a fossil determined by radiometric dating

• The relative age of a fossil determined by radiometric dating

• Younger rock layers sit on top of older rock layers

• Older rock layers sit on top of younger rock layers

Tags

NGSS.MS-ESS1-4