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- 1. Multiple Choice
How is an isotope different from the standard form of a chemical element?
It has a different number of positrons.
It has a different number of electrons
It has a different number of neutrons
It has a different number of protons.
- 2. Multiple Choice
Compared to the amount of carbon atoms on Earth, the amount of radioactive carbon atoms is infinitesimal. In this sentence, what is the best synonym for "infinitesimal?"
Tiny
Dangerous
Equal
Large
- 3. Multiple Choice
Which of the following best describes the nucleus of an atom of carbon-14?
Eight protons, six neutrons
Six protons, eight neutrons
10 protons, four neutrons
Four protons, 10 neutrons
- 4. Multiple Choice
What is radioactive decay?
The ability of radioactive elements to decay into different elements over time.
The effect of exposing radioactive material to the human body.
The ability of radioactive atoms to destroy other atoms
The physical wear and tear that ancient artifacts exhibit over long periods of time.
- 5. Multiple Choice
What is the relationship between carbon-14 and nitrogen?
Nitrogen and carbon-14 react to form radioactive elements
Over time, nitrogen becomes carbon-14.
Over time, carbon-14 becomes nitrogen
Carbon-14 can be used to date ancient nitrogen.
- 6. Multiple Choice
Let's say you have a sample of 10 milligrams of carbon-14. How many milligrams will you have in 5,700 years?
0 mg
5 mg
10 mg
20 mg
- 7. Multiple Choice
How much carbon-14 do you have in your system today, compared with the amount you had when you were born?
More
Less
The same amount
None
- 8. Multiple Choice
What can you learn about an organism from the amount of carbon-14 in its remains?
How long ago it died.
What its diet consisted of.
Which biological kingdom it belonged to
Which living animals it's most closely related to.
- 9. Multiple Choice
Which of the following items can be dated with carbon-14?
a. Ceramic pitcher
b. Diamond
c. Bones
d. Statue
- 10. Multiple Choice
Why can't carbon-14 dating be used on dinosaur remains?
The remains of living creatures cannot be accurately dated with carbon-14
The carbon-14 isotope did not exist during the age of the dinosaurs.
Dinosaurs were reptiles who had no carbon-14 in their systems.
Carbon dating is only accurate to 60,000 years ago-- well after the age of the dinosaurs.
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