Answer Choices
describe how squadrons of planes can save fuel by flying in a V formation.
discuss the effects of downdrafts on birds and airplanes.
explain research conducted to study why some birds fly in a V formation.
illustrate how birds sense air currents through their feathers.
Explanation for Question 22 From the Reading Section on the Official Sat Practice Test 7
Question 22 asks. And the main purpose of the passage is to what? 2 So we can look at two parts of this passage to determine the correct 3 answer to this question. We're going to look at the title and where this 4 was published, and that comes in that little blurb paragraph before the actual passage 5 starts. And then we're also going to look at what information they claim in 6 that introductory paragraph. So we'll start with that little blurb. 7 It says that the title of this is why birds fly in a V 8 formation by American association for the advancement of science. 9 So this is going to this passage is going to be an explanation of 10 some scientific phenomenon in a scientific journal. 11 And then if we look at that first paragraph, 12 we can see that it says a new study of Ibises finds that these 13 big winged birds carefully positioned their wingtips in sync they're flapping, 14 presumably to catch the proceeding birds, updraft and save energy during flight. 15 So you can see that that sentence introduces a study that they're going to 16 explain throughout the passage that addresses that phenomenon that 17 was talked about in the title. So if we look at the answer choices 18 here, we're merely looking for one that talks about the discussion of some kind 19 of study or research experiment. So we can just go through each of them 20 individually, answer choice a says to describe how squadrons 21 of planes can save fuel by flying in a V formation. 22 So this passage is about ...