Radioactive Decay Earth Science

Quiz
•
Science
•
7th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The graph below represents the decay of a radioactive isotope into a stable disintegration product. Which remains could be dated using this radioactive isotope?
seeds from the earliest grasses
mastodon bone
feathers from the earliest birds
Naples tree trunk
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The graph titled "Decay of a Radioactive Isotope" shows the rate of decay of a radioactive isotope through two half-lives. Each box in the diagram represents the ratio of atoms of the radioactive isotope to atoms of the disintegration product at different half-lives. The box at two half-lives has been left blank. Which box best represents the ratio of these atoms at two half-lives?
Box A
Box B
Box C
Box D
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which graph below represents the potassium-40 and the amount of argon-40 and calcium-40 over four half-lives?
A
B
C
D
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
One reason why carbon-14 was used to determine the age of the woolly rhinoceros tooth was because carbon-14:
never completely decays
has a very long half-life
can be found in most organic remains
is easily identified in Carboniferous bedrock
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A sample of holmium-166, located deep underground, is subjected to high temperature and pressure. The half-life of this sample of holmium-166 will be:
A) 13.40 hours
B) 24.30 hours
C) 26.80 hours
D) 28.70 hours
Tags
NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which radioactive isotope has a half-life closest to the half-life of the radioactive isotope rubidium-87?
iodine-131
gold-198
beryllium-10
lutetium-176
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
After 2.5 days, how much of a 100-gram sample of gold-198 will remain?
6.25 g
12.5 g
25 g
50 g
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