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10 May 2019

The half-life of Carbon-14 is about 5700 years. You have found a fossil that you believe to be about 34,200 years old because it has _____ the normal (modern) expected ratio of Carbon-14C

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11 May 2019

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Measurements indicate that a fossilized skull unearthed by a paleontologist has a carbon-14/carbon-12 ratio about one-eights that of the skulls of present -day animals. What is the approximate age of the fossil? (The half-life of carbon -14 is 5,730 years

viridianmuskrat41

Compared to australopithecines and modern humans, what were Homo erectus limb bones?

Australopithecus afarensis

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the fossil skeleton known as âLucyâ belongs to this species

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is the largest well-studied collection of early hominins

the earliest primates are found in which epoch?

All of the Eocene primates have modern primate descendants.

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If an isotope has a half-life of 4 billion years, then in 4 billion years what will happen?

all of the original amount will have decayed

half of the original amount will still be present

a quarter of the original amount will still be present

all of the original amount will still be present

Biostratigraphy is a type of relative dating technique.

True

False

Which dating technique could you use to get an estimated age in years from a bone that is known to be less than 40,000 years old?

"John is two years older than Joe." This statement is an example of

a chronometric comparison

a theory

an absolute date

a relative date

The task of interpreting early hominin evolution

is still not complete

is best left to geologists

rarely replies on assigning taxonomic names to fossil material

does not require a chronological framework

The earliest possible hominin found to date has been given the name __ and was discovered in __.

Ardipeithecus / East Africa

Sahelanthropos / Central Africa

Australopithecus / the Rift Valley

Orrorin / the Fayum

Compared to australopithecines and modern humans, what were Homo erectus limb bones?

Australopithecus afarensis

all of these

the fossil skeleton known as âLucyâ belongs to this species

is found in southern and eastern Africa

is the largest well-studied collection of early hominins

The earliest primates are found in which epoch?

All of the Eocene primates have modern primate descendants.

False

True

If an isotope has a half-life of 4 billion years, then in 4 billion years what will happen?

all of the original amount will have decayed

half of the original amount will still be present

a quarter of the original amount will still be present

all of the original amount will still be present

Biostratigraphy is a type of relative dating technique.

True

False

Which dating technique could you use to get an estimated age in years from a bone that is known to be less than 40,000 years old?

"John is two years older than Joe." This statement is an example of

a chronometric comparison

a theory

an absolute date

a relative date

The task of interpreting early hominin evolution

is still not complete

is best left to geologists

rarely replies on assigning taxonomic names to fossil material

does not require a chronological framework

The earliest possible hominin found to date has been given the name __ and was discovered in __.

Ardipeithecus / East Africa

Sahelanthropos / Central Africa

Australopithecus / the Rift Valley

Orrorin / the Fayum

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The half-life of Carbon-14 is about 5700 years. You have found a fossil that you believe to be about 34,200 years old because it has _____ the normal (modern) expected ratio of Carbon-14C

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