April ACT Official Science Thread

Test Preparation ACT Preparation
61

<p>I guess we will have to wait and see, I have a feeling it won’t be too drastic though imo but than again I’m not the ACT. Do you guys have any idea when the scores will be available online?</p>

62

<p>JDE the scores come out the 26</p>

63

<p>I put both 35 million years and water vapor.</p>

<p>You could infer the answer as water vapor because then it wouldn’t be a viable candidate for the experiment (because water vapor, obviously, does not drop to the ground).</p>

<p>It was either stated in the passage or question that the crater had fallen 65 million years ago.</p>

64

<p>i still think that the answer to the cloud question might still be the one with ice in it. while the boiling point decreases with pressure, it’s pretty darn cold up there, and i’d be willing to bet temperature decreases a lot faster than pressure. also, the presence of ice is totally plausible: [Cirrocumulus</a> cloud - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/Cirrocumulus_cloud]Cirrocumulus”>Cirrocumulus cloud - Wikipedia) – this cloud is at 6000 m or greater and is pretty much entirely made of ice crystals.</p>

<p>i know this is definitely overthinking it and that the passage made no reference to ice, but i’m an optimist :P</p>

65

<p>I put 100 million years but I guess that’s wrong :(</p>

<p>Also, is there a consensus on the question about contamination?</p>

<p>Also, what about the question asking whether any of the mixed plates contained strains 6-10?</p>

66

<p>I don’t believe that it was water vapor because as you reach a greater distance the colder it gets. Even though the boiling point decreases with pressure, I doubt that there will be water vapor up there. Even though ice wasn’t mentioned in the passage doesn’t mean it’s automatically ruled out. (Cirrus Clouds). I might be wrong, but I still believe it’s ice crystals. Also, the ice crystals wouldn’t fall to the ground because they would gain heat as the fall causing them to melt and cirrus clouds are made up of ice crystals.</p>

67

<p>i got like 7 out of the first 14 questions where the answer was D…first two passages were hard, did a lot of people get D, just wanna see if im right</p>

68

<p>The science was wack</p>

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<p>for the one about finding the lowest freezing or melting point (whichever one was not given) was it 80% EO?</p>

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<p>@beaver</p>

<p>Yes I got that</p>

<p>what about the question asking whether any of the mixed plates contained strains 6-10? </p>

<p>I put the middle one.</p>

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<p>i said none for that one</p>

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<p>why were people subtracting 65 from 100 for finding out how many more years till the next asteroid?</p>

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<p>mabsjenbu123- it was none of them because if you look at the question is said it had to be 6 AND 10, which none of the containers had the resemblance of 6 AND 10, except one of them was 6, but not 10…I don’t remember which one.</p>

<p>beaver- you had to subtract the 65 from the 100 because the question tells you (or the passage…I forget) tells you that a meteor has already struck the Earth, which was 65 million years ago. The graph tells you that a diameter of 20 km meteor strikes the Earth every 100 million years. Since one already struck 65 million years ago, you subtract that from 100 to get 35 million years.</p>

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<p>@Total deriv, I think that the 6 and 10 one was not no answer. Wasn’t the question referring to the strands matching the colonies? If so, then 6 was - - + + and 10 was + + + +. The one in the middle had a colony that matched 6 and one that matched 10.</p>

<p>EDIT: If I’m not mistaken, that letter looked like this <a href=“http://i40.■■■■■■■.com/ru1zxl.jpg[/url]”>http://i40.■■■■■■■.com/ru1zxl.jpg&lt;/a&gt;
The bottom 2 dots were one colony and the top was another (possibly strand 6 and 10).</p>

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<p>I don’t think that’s what one of them was. I remember seeing one with 4 dots in the beginning and then losing its top two dots for the first two and regaining them for the last two…which would be 6. However, I don’t remember ever seeing one that was 10 because none of them stayed the same with the loss of amino acids.</p>

<p>(I have a terrible memory, but I’m pretty sure it was none of them)</p>

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<p>I thought it asked for any in strains 6 TO 10</p>

<p>as in, any of them</p>

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<p>No I remember it saying 6 and 10. I could be wrong, but I distinctly remember reading 6 and 10.</p>

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<p>I remember 6 and 10 as well.</p>

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<p>I just remember 6 then 10. I guess that doesn’t help me at all. lol</p>

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<p>Haha…it’s only one question, which you could still get a 36 depending on the curve.</p>