Ascientist is interested in comparing the age of a rock with other rocks. what is the scientist determining by doing this?

the absolute age of the rocks.

Reasoning: The relative age of a rock is not an exact age. rather it's the comparison of one rock or fossil to another to find which one is older or younger.

Hi There!

Question - A scientist is interested in comparing the age of a rock with other rocks. What is the scientist determining by doing this?

Answer - The rocks absolute age

Hope This helps :)

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.