Question

He measures the amount of radioactive uranium in the sample and compares it to the amount of radioactive lead. He then compares these amounts to the rate at which these two radioactive materials decay.

What is Rex most likely trying to figure out about the rock formation?
A.
its mass
B.
its density
C.
its age
D.
its volume
PLEASEEE HELP YOU GET 12 POINTSSSS!!!!!

Answer 1

C. its age

Step-by-step explanation:

Answer 2

C. its age

Step-by-step explanation:

Rex is most likely trying to figure out the age of the rock formation. It is usually done by comparing the isotopic ratios of the daughter to the parent and their decay rates.

• This is known as radiometric dating.
• Here an exact numerical age of the rock is usually obtained by measuring these isotopic ratio.
• The rate of decay serves as a clock to measure how far the radioactive material has decayed in time