Absolute Age of Rocks and Fossils Quick Check
1 of 41 of 4 Items
Question
When will a fossil be used in finding the absolute age of rocks?(1 point)
Responses
if it existed for a long period of time and in a wide area
if it existed for a long period of time and in a wide area
if it existed for a long period of time and in a small area
if it existed for a long period of time and in a small area
if it existed for a limited period of time and in a wide area
if it existed for a limited period of time and in a wide area
if it existed for a limited period of time and in a small area
The correct response is:
if it existed for a long period of time and in a wide area
Absolute Age of Rocks and Fossils Quick Check
2 of 42 of 4 Items
Question
Which quantity helps determine the absolute age of rocks and fossils?(1 point)
Responses
the difference between the number of protons and neutrons in carbon-14
the difference between the number of protons and neutrons in carbon-14
the difference between the amounts of carbon-12 and carbon-14
the difference between the amounts of carbon-12 and carbon-14
the ratio of protons to neutrons in carbon-14
the ratio of protons to neutrons in carbon-14
the ratio of carbon-12 to carbon-14
The correct response is:
the ratio of carbon-12 to carbon-14
Which statement best describes why most individual organisms never fossilized?(1 point)
Responses
Only organisms that lived in the ocean fossilize.
Only organisms that lived in the ocean fossilize.
Chemicals that fossilize organisms are rare.
Chemicals that fossilize organisms are rare.
Only organisms with hard parts fossilize.
Only organisms with hard parts fossilize.
Conditions for fossilization are rare.
The correct response is:
Conditions for fossilization are rare.
Use this paragraph: The half-life of carbon-14 is 5,700 years. A certain sample of wood has 20 grams of carbon-14 when it is alive.
How many grams of carbon will it have after 5,700 years?
(1 point)
Responses
2 grams
2 grams
10 grams
10 grams
5 grams
5 grams
40 grams
The correct response is:
10 grams