Question

read the passage and answer the following question(s).
dating rock strata
scientists can determine the age of rock layers by measuring radioactive elements within the rock.
radioactive elements found in sedimentary rocks decay quickly, so this method can only date
sedimentary rocks that are less than 50,000 years old.
volcanic rock contains radioactive elements that decay very slowly, so scientists can date volcanic rocks that
are much older than 50,000 years.
a team of scientists is investigating a rock formation found in a region. the diagram shows the rock
formation that the scientists are investigating.
use the drop - down menus to complete the sentences.
scientists can determine the
rock above and below the volcanic layers by using the law of
choose... this law states that younger rock
choose... older rock.
conservation
superposition

Explanation:

The law of superposition states that in undisturbed sedimentary rock layers, younger rocks are deposited on top of older rocks. This principle helps in determining the relative ages of rock layers. Volcanic layers can be dated using radiometric dating (which is related to the concept of absolute dating as it gives a numerical age). The law of superposition is a fundamental concept in geology for relative - age determination of rock strata.

Answer:

Scientists can determine the absolute dates of volcanic layers by using the law of superposition. This law states that younger rock layers are deposited on top of older rock layers.