Collegeboard REAL CR Q's

iiBoGo
Fri, 30 Sep 2011 20:29:05 +0000

The passage suggests that we cannot directly observe these planets BUT

“we know about them indirectly
through the gravitational effects they exert on their parent
stars. Yet, even though we have no picture of what they
look like, enough information has been deduced”

So we know about them through there gravitational effects, well how do we know what these gravitational effects do? It would have to come from similar situations and were now applying that knowledge for these planets.

You could also just eliminate all the other answers.

(A) inference based on an untested theory (Inference sounds good…untested?? NO)
(B) extrapolation from similar situations (there is nothing that makes this wrong)
(C) analysis of a single case by multiple observers (what multiple observers?)
(D) hypothesis confirmed by direct observation (“We know about them INDIRECTLY”)
(E) comparison of theory with physical evidence (physical evidence???)