Radioactive Isotopes

Quiz
•
Science
•
9th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Radiometric dating is possible because the rates of decay of radioactive isotopes _____.
change over time
change from place to place
are constant
vary widely
Tags
NGSS.HS-PS1-8
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the half-life of a radioactive group of atoms is 100 years, then how old is the rock if there have been two half-lives?
25 years
200 years
400 years
800 years
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many grams of Carbon-14 will remain after 17,100 years- C-14 has a half life 5,730 so 17,100 is about 3 half lives?
32 g
16 g
8 g
4 g
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What percentage of Rubidium-87 will remain after 4 half-lives?
25%
12.5%
6.25%
3.125%
Tags
NGSS.HS-PS1-8
5.
MATCH QUESTION
1 min • 1 pt
Match the radioactive isotope to its decay product (daughter).
Nitrogen-14
Potassium-40
Calcium-40
Rubidium-87
Strontium-87
Uranium-238
Lead-206
Carbon-14
Tags
NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the name given to an "unstable" isotope?
radioactive
radioisotopes
photon
electron cloud
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these describes the use of the carbon-14 isotope?
formed by radioactive decay
cannot beused to date objects
can be used to date objects more than 6,000 years old
can be used to date objects less than 75,000 years old
Tags
NGSS.HS-PS1-8
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