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Reading Comprehension - Worked Examples

Current time:0:00Total duration:4:25

Organizing info | Science passage | The Sun

Reading Comprehension - Worked Examples

Video transcript

the author's discussion of nuclear fusion the last paragraph serves primarily to Joseph dot so what what do you remember about the nuclear fusion discussion in last paragraph and they make sense just go up and have a look at the last paragraph here it is absent a generally accepted explanation of how helium and hydrogen to produce the sun's energy paint findings could not easily override her contemporary preconceptions we now know the sun's heat is generated through nuclear fusion then explains fusion but this process was so well charted today that even a hundred physics textbooks discuss it was inadequately the understood in 15-20 so when when nuclear fusion was finally understood all of a sudden everybody thought oh my gosh Cecilia Payne you were right all along okay so this question again what is the discussion doing and you'll notice that I have a look at the choices yet I really want to have an idea what I'm looking for before I look at the choices so what is that discussion doing it's saying look this is why nobody accepted her findings at the time because people didn't understand how the Sun was going to generate that heat and then nuclear fusion became clear that that actually works that actually was a thing all of a sudden we understand why how the Sun makes that heat and everybody accepted Cecelia Payne's bindings and was too indicated ok so again this is a purpose of the paragraph purpose of the elements of the paragraph what is that doing it's helping us to understand why the scientists finally came around to accepting her hypothesis which is really the main point of the whole passage here we go is it primarily to illustrate the impact of Payne's findings on a discipline related to although distinct from the one in which she ultimately made her mark I don't think it's a different discipline and again it doesn't matter we're looking for helping us with the the why it finally came around that her findings were accepted okay b2 explained in part the reactions of Payne's fellow scientists to her interpretation of the data that she analyzed yeah so it does it does explain why they didn't they didn't understand how the Sun made all that heat so that looks kind of good let's keep on going and see if there's anything better the purpose was primarily to clarify so one of the things I'm doing here is I'm actually turning all of these these verbs into their infinitive form and that helps me really focus on the actual words that are in each choice I'm going to do that here so does the purpose to explain is it to illustrate is it to clarify to show or to demonstrate ok so obviously those are all similar but it really helps us lock into the structure of each choice so let's let's look at B is the purpose of it clarify an underlying reason for Payne's rejection of the iron hypothesis no it can't be a reason for her rejection because she didn't know about it so that's wrong D is the purpose to show how Payne's findings came ultimately to be modified in light of later scientific developments know her her findings were not modified okay so that's wrong to e to demonstrate the pains reliance on incorrect data did not prevent her from reaching a sound hypothesis okay so incorrect data no she wasn't relying on incorrect data at all so that's definitely not right but let's come back to B and the reason that B is right is that it's for a couple of reasons one is that it's supported by the passage two is that we made it we made a decision earlier to look for the choice that matches what we thought it was going to be we are trusting ourselves trusts and the reason here it serves primarily to do was to explain the scientists position and that's what we have here would be