Earth's History - Fossil Record
Authored by Leigh Cooper
Science
9th - 12th Grade
Used 4+ times
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12 questions
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1.
FILL IN THE BLANKS QUESTION
30 sec • 2 pts
Scientists determine the age of rocks and fossils using 2 different techniques. These techniques are called radioactive or absolute dating and (a) dating.
2.
FILL IN THE BLANKS QUESTION
30 sec • 2 pts
Atoms are isotopes that have the same atomic (a) but have different atomic masses.
3.
FILL IN THE BLANKS QUESTION
30 sec • 2 pts
The nuclei of some isotopes release particles or energy or both. What are these isotopes called?
(a)
4.
FILL IN THE BLANKS QUESTION
30 sec • 2 pts
The amount of time it takes for 1/2 of a sample of isotope to decay is called the (a) life.
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
When an organism dies the amount of _____________ remains constant over time.
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
When an organism dies the amount of ________________ continues to decay.
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Carbon dating ____________ be used to date fossils older than 75,000 years old.
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