1. It can be inferred from the passage that a hypothesis using neutrinos for the missing dark matter in the standard model would include which of the following elements?

Indicate all that apply.

A) A structural model of the universe in which the average distance between galaxies increased over time.

there is a major reason why neutrinos cannot account for all of the Universe’s dark matter. A neutrino-dominated universe would have inhibited structure formation and caused a “top-down” formation (larger structures forming first, eventually condensing and fragmenting to those we see today).

From this sentence we infer that neutrino contributes to the formation of galaxies for instance from a top down perspective: formation, increasing in their size and eventually disintegration. Basically is the same process from stars, novas, supernovas, collapse. One way til the end.

B) A justification for the “top-down” universe formation that includes a new weakly interacting particle.

Wrong. this sentence take two things the passage says and fuse in one thing. neutrino is a weakly particle and the neutrino itself contributes to the top down view. The top down view does not generate a NEW weakly neutrino

C) An inconsistency regarding the conservation of energy when used for measurements at the atomic level.

Completely out of scope option. Never seen in the passage


2) It can be inferred that the author of the passage mentions “large galaxies” primarily in order to

A) explain another benefit of using the standard model to explain particle interaction

no it is used to explain us the bottom up model

B) identify a probable source of missing dark matter

completely wrong. It point out us that an alternative model exists and that the neutrino is only partial responsible of the dark matter

C) help account for the accuracy of the standard model in measuring distance

completely wrong. It is true that the standard model shows us the expansion and as it turns out the distance BUT never see in the passage about the accurancy.


D) indicate how cosmic structures have followed a model in which larger structures disintegrate

just a fact, and a partial view of what the passage says

E) point out a factor that contradicts a model using neutrinos as the universe’s missing dark matter

there is a major reason why neutrinos cannot account for all of the Universe’s dark matter.

We do know that neutrino is pART of the dark matter and he contributes to the top-down view.

A neutrino-dominated universe would have inhibited structure formation and caused a “top-down” formation (larger structures forming first, eventually condensing and fragmenting to those we see today). However, galaxies have been observed to exist less than a billion years after the Big Bang and, together with structure formation simulations, a “bottom-up” formation (stars galaxies, then large galaxies, then clusters, etc.)

However, large galaxies tell us a contradiction thanks to the bottom up view

Link to further practice https://gre.myprepclub.com/forum/search.ph ... mit=Search

Regards