ACT science is about finding stuff in charts, graphs and sometimes in blurbs. The stuff just happens to be sciencey. You don't have to know the science to answer the questions. You just have to read the information.
If you're confused with science, or just want to raise your score in general, I tutor ACT prep. Drop me a line.
3 - look at figure 3. The difference in times for p waves and s waves to reach the seismograph is increasing as distance from earthquake to seismograph increases. At 10,000 km it's somewhere around 12 minutes, so for 10,500 km it's certainly at least 12. Those lines are not going to suddenly converge. The only valid answer is d.
4 - Examine figure 2 and figure 3. The earthquake begins, then those waves move and are detected by the seismographs at different distances from the focus. Figure 3 begins at 0 km distance from the focus, 0 minutes after the earthquake. That's when the earthquake happens, or starts at the focus. The answer is f.
6 - Examine figure 2. Note that the top color is lake clay, and its height shows elevation which is also the thickness of that layer. Where is the top color thinnest? The answer is at Winnepeg Manitoba.
7 - Examine figure 3. The smallest oxygen isotope ratio is at the left of each site chart. It shows that at the top (smaller ----------> larger). In each case, it's between 20 and 30 m. That's c.
8 - The top gray layer is the lake clay. The second layer, with the diagonal lines, is glacial till. Clay gets wider/thicker moving left from Grand Forks to Site 3. The glacial till gets thinner moving left from Gran Forks to Site 3. It's decreasing. That's J.
10 - For all three sites the y-axis is depth. 3M is the right most dot in each table. It's at about -15 in each case. That's J.
Keep in mind I tutor ACT prep via Skype online. This includes strategies and subject matter prep in each area. There is no subject matter prep in science. All the information is contained in the tables and charts and graphs, and in the passages. You just have to find it when answering the questions.
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