Page 128 - Science Course 3 (Book 2)

Mo11-L3: Lesson Review Quiz (Multiple Choice)

Direction: On the line before each question or statement, write the letter of the correct answer

1. An absolute age of a rock is an age
A. in years.
B. based on fossils.
C. relative to another rock.
2. Isotopes are atoms of the same element with different numbers of
A. protons.
B. neutrons.
C. electrons.
3. During radioactive decay,
A. the amount of parent material increases.
B. the amount of daughter material increases.
C. the half-life of the parent material gets longer.
4. An absolute age of a mammoth bone could be determined using
A. carbon-14.
B. rubidium-87.
C. uranium-238.
5. Earth’s approximate age was determined using isotopes that have
A. very long half-lives.
B. low ratios of C-14 to C-12.
C. steep radioactive decay curves.
6. Radiometric methods provide accurate ages for
A. igneous rocks.
B. carbon-rich rocks.
C. sedimentary rocks.
7. Radiometric dating methods indicate that Earth is about years old.
A. 4.54 billion
B. 4.54 million
C. 4.54 thousand

Mo11-L3: Lesson Review Quiz (Short Answer)

Direction: Respond to each statement on the lines provided.

8. Describe three objects that could be dated using the radioactive isotope carbon-14.

9. Explain how radiometric dating can be used to date some rocks and not others.

10. Explain how scientists determined Earth’s age and state this value.

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