Explanation for Question 22 From the Reading Section on the 2017 April Sat
Okay. Now we are looking at our third passage of the 2017 2 April exam. Let's take a look at question number 22 in McKinnon's 3 view, serious differs from other objects in the asteroid belt in which significant 4 way. So we're going to look back at the discussion of how serious differs 5 from these other objects. Um, so the passage says that, 6 um, series is by far the largest object. 7 Um, and that's not the only reason it doesn't quite fit in 8 with many of its companions. Um, 9 in particular, McKinnon points out that series has a low density, 10 which suggests, um, a greater percentage of water ice, 11 which is, he says it's a high proportion. 12 Um, and also a dip in series light spectrum may be a sign 13 of ammonium rich clay at the surface. 14 So he says that this is pretty unique. 15 Um, this material has never been found in the fragments of asteroids that have 16 fallen to earth. 17 So th these characteristics are the ones that kind of make Cirrus unique. 18 Um, looking at our answer choices choice, 19 a the surface temperature series is lower, 20 nothing referenced about surface temperature. 21 So we eliminate that. Be the dimensions have varied more over time. 22 Um, we did see that series was a bit larger, but this doesn't speak 23 to how its dimensions have changed over time. 24 That idea of overtime isn't really expressed. 25 So be as out, um, see the surface composition is dissimilar from other objects. 26 That's definitely our correct answer. Remember we saw th...