Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Radioactive Dating
Test Description: Details the usefulness of radioactive elements, half-life controls and different types of radioactive materials.
Instructions: Answer all questions to get your test result.
1) Why are radioactive substances useful for measuring geologic time?
A
The half-lives of most radioactive substances are shorter than five minutes.
B
The disintegration of radioactive substances occurs at a predictable rate.
C
The ratio of decay products to undecayed products remains constant in sedimentary rocks.
D
Measurable samples of radioactive substances are easily collected from most rock specimens.
2) If a radioactive material were cut into pieces, the half-life of each piece would be
A
the same as the original specimen's half-life
B
less than the original specimen's half-life
C
none of the above
D
greater than the original specimen's half-life
3) If an object is cut in eight equal pieces, what happens to its half life?
A
1/8 as long
B
the same
C
1/64 as long
D
8 times longer
4) Why are radioactive materials useful for measuring geologic time?
A
Measurable samples of radioactive materials are easily collected from most rock types.
B
The half-lives of most radioactive materials are less than five minutes.
C
The ratio of decay products to undecayed material remains constant in sedimentary rocks.
D
The disintegration of radioactive materials occurs at a predictable rate.
5) Compared to the length of time for the first half-life of a sample of a radioactive isotope, the length of time for the second half-life is
A
the same
B
none of the above
C
less
D
greater
6) One similarity between uranium-238 and carbon-14 is that both
A
have the same half-life
B
decay at a predictable rate
C
are normally found in large quantities in living matter
D
are found in granite
7) The half-life of a radioactive substance is mainly controlled by the
A
temperature of the substance
B
amount of the substance
C
composition of the substance
D
pressure acting on the substance
8) Which radioactive isotope is most useful for determining the age of mastodont bones
A
potassium-40
B
carbon-14
C
uranium-238
D
rubidium-87
9) Which radioactive isotope disintegrates to lead (Pb206)?
A
C14
B
U238
C
Rb87
D
K40
10) Which two elements are most useful for the radioactive dating of recent organic remains?
A
Rb87 and Sr87
B
C14 and N14
C
U238 and Pb206
D
K40 and Ca40
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?