Problemas
How would a geologist determine the age of mountains formed by the upwelling of igneous rock? A. use radioactive dating to date Earth's outer core below the mountains B. use radioactive dating to date the igneous rock and the topmost layer of soil C. use radioactive dating to date only the bedrock underneath the mountains D. use radioactive dating to date water in a lake in the mountains C.2025 Renaissance Learning InC. All rights reserved
Roztwór
Carlos
professionell · Tutor durante 6 años
4.2
(263 Votos)
Respuesta
B. use radioactive dating to date the igneous rock and the topmost layer of soil
Explicación
## Step 1The problem is asking us to identify the correct method a geologist would use to determine the age of mountains formed by the upwelling of igneous rock. The options provided suggest different methods of radioactive dating.## Step 2Radioactive dating, also known as radiometric dating, is a method used to determine the age of rocks and other objects by measuring the decay of radioactive isotopes. The decay of these isotopes occurs at a constant rate, which allows scientists to calculate the age of the object.## Step 3In this case, the igneous rock is the object of interest. Therefore, the geologist would use radioactive dating to date the igneous rock itself, not the bedrock underneath the mountains, the water in a lake in the mountains, or the Earth's outer core below the mountains.## Step 4The topmost layer of soil is also not a good choice for dating because it can be influenced by various factors such as weathering and erosion, which can alter the original composition of the soil.