Lesson 10 - Clues to Earth's Past Part 3

states that the geologic feature which cuts another is the younger of the two features

• law of horizontality
• cross cutting relationships
• law of superposition
• uniformitarianism

What happens during radioactive decay?

• A stable isotope of one element changes into an unstable isotope of a different element
• A stable isotope of one element changes into an unstable isotope of the same element
• An unstable isotope of one element changes into a stable isotope of a different element
• An unstable isotope of one element changes into a stable isotope of the same element

Tags

NGSS.HS-PS1-8

Scientists use radioactive decay to measure...

• relative time
• absolute time
• half-lives
• time of day

Tags

NGSS.HS-PS1-8

What makes using radioactive material useful for dating rock layers?

• it is dangerous to be near
• it decays at a constant rate
• sedimentary rock layers don't have radioactive material
• it can only be found in metamorphic rock

Tags

NGSS.HS-PS1-8

Which is the most accurate method scientists can use to estimate Earth's age?

• relativism
• superposition
• relative dating
• radioactive dating

Footprints and trails are examples of

• Casts
• Trace Fossils
• Index Fossils
• Molds

Which type of dating method can be used on rock layers by applying the Law of Superposition?

• relative dating
• absolute dating
• radioactive dating
• radiometric dating

Tags

NGSS.MS-ESS1-4

How many of the original atoms of a decaying isotope remain unchanged after three half-lives?

• three-halves
• three-quarters
• one-quarter
• one-eighth

Tags

NGSS.HS-PS1-8

Which best describes a fossil that helps determine the relative age of a rock layer?

• trace fossil
• index fossil
• radioactive fossil
• unconformity fossil

Tags

NGSS.MS-ESS1-4

The best index fossils have which two traits?

• widespread geographically, long lifespan
• widespread geographically, short lifespan
• specific place, long lifespan
• specific place, short lifespan

Tags

NGSS.MS-LS4-1