SCIENCE TEST

More documents

Recommendations

Info

depth (m) 10 20 30 40 osit is thinnest 3, the smallest lake clay was f the lake clay to Site 3, the 30 glacial till F. increases. 40 G. remains the same. H. first increases and then decreases. J. decreases. Figure 3In Figure 2, the key shows us that the glacial till is indicated with stripes. As we move left from Grand Forks to Site 3, we see that the area of the glacial till gets thinner. So the thickness of the glacial till decreases. 9. According to Figure 2, which of the following graphs best represents the elevations, in m above sea level, of the top of the glacial till layer at Sites 1, 2, and 3 ? A. B. lake clay 18 16 ___________________________ O/ O of groundwater Answer: sample J. 18 16 O/ O of standard water sample y, and T. W. D. Edwards, “Isotopic Composition of Old Ground Water from Lake Agassiz: by the American Association for the Advancement of Science. elevation (m above sea level) elevation (m above sea level) 225 200 175 150 225 200 175 150 1 1 depth (m) O = – 1 × 1,000 2 Site 2 Site 3 3 10 20 C. D. elevation (m above sea level) elevation (m above sea level) 225 200 175 150 225 200 175 150 1 1 lake clay 2 Site 2 Site 10. Precipitation that falls at Sites 1, 2, and 3 soaks into Answer: the soil C. until it reaches the groundwater table about 3 m below the surface. Based on Figure 3, and assuming no alteration of the precipitation, the δ Notice that the word elevation appears in italics in this question. In previous questions about Figure 2, we’ve been look at the thickness of different layers. Whoever wrote the question wants to make sure that we pay attention to elevation instead of thickness. 18 O value of present-day precipitation in the study area is closest to: F. −26. G. −23. H. −20. J. −15. In Figure 2, the elevation of a layer is shown with numbers along the vertical axis labeled “elevation GO (m ON above TO sea THE level)”. NEXT So, PAGE. for example, the top of the glacial till is 45 230 m at Winnipeg and 200 m at Site 1. Looking at sites 1, 2, and 3, we see that the elevation of the top of the glacial till is highest at Site 2 and lowest at Site 3, so C is the only possible answer. 10. Precipitation that falls at Sites 1, 2, and 3 soaks into the soil until it reaches the groundwater table about 3 m below the surface. Based on Figure 3, and assuming no alteration of the precipitation, the δ18Ο value of present-day precipitation in the study area is closest to: F. −26. 3 3
G. −23. H. −20. J. −15. Answer: J. We are told that present-‐day precipitation soaks to 3m below the present-‐day surface. Since the data was recorded fairly recently (not thousands of years ago), we assume that we can use the data recorded in Figure 3 for δ18O values at 3m below the surface. Notice that the values on the vertical axes start at zero on the top left corner and get bigger as they go down. At all three sites, the δ18 4Passage III Experiment 2 Some students tested their hypothesis that the presence of bubbles in cans of various liquids would affect the roll time (the time it took a can to roll, without slipping, down an incline between 2 fixed points; see Figure 1). The students added 1 L of the f an empty can. They sealed the can aside. Fifteen minutes later they fou can before and immediately after Again they set the can aside. Two h the roll time of the can before and im ing it (Trial 5). The results are shown fixed points incline 4 O value at around 3m Table 2 Roll tim below the surfacePassage is about III -‐15. can Experiment 2 before shaking a angle of Trial (sec) The students added 1 L of the f Some students inclination tested their hypothesis that the pres- Passage III an empty can. 4 They sealed 1.86 the can ence of bubbles in cans of various liquids would affect the Some students tested their roll hypothesis time (the that time the it presence took a can of bubbles to roll, in without cans of slipping, various liquids aside. would Fifteen affect 5 minutes later 1.75 they fou Figure 1 the roll time (the time it down took an a can incline to roll, between without 2 slipping, fixed points; down see an incline Figure between 1). 2 fixed can points; before see and immediately after Again they set the can aside. Two h Figure 1). the roll time of the can before and im Identical 1.2 L aluminum cans were used in the first two experiments. The angle of fixed inclination points of incline the incline was 2.3° in all three experiments. ing it (Trial 5). The results are shown Experiment 3 The students added 1 L of the f an empty 2 L clear plastic bottle a When they rolled the bottle Table down 2 t formed. They shook the bottle, cau and set the bottle aside. Fifteen Roll min tim angle of can bles were still visible, but after 2 ho be seen. before shaking a Trial (sec) inclination Figure 1 4 1.86 Adapted from David Kagan, “The Shaken 5 1.75 by The American Association of Physics T Experiment 1 Identical 1.2 L aluminum cans were used in the first two experiments. The angle of inclination of the Identical incline was 2.3° in all three The experiments. students 1.2 L aluminum added 1 L cans of a were liquid—tap used in water the first contain- two Experiment 3 ing experiments. no bubbles—to The angle an empty of inclination can, sealed of the the can, incline and found was 2.3° in all three experiments. The students added 1 L of the f its roll time. Next, they added 1 L of the tap water to a Experiment 1 an empty 2 L clear plastic bottle a second empty can, sealed it, shook it, and immediately When they rolled the bottle down t The students added 1 L found of a liquid—tap its roll time. water They contain- repeated ing no these bubbles—to procedures an empty usingcan, sealed formed. the can, They shook the bottle, cau and found its roll time. soapy Next, they water added containing 1 L of the many tap water bubbles, to a second and a empty carbonated can, sealed it, and shook set the it, and bottle aside. Fifteen min immediately found its roll beverage time. They that repeated contained these no procedures bubbles and using that soapy tasted water flat, containing bles many were still visible, but after 2 ho bubbles, and a carbonated having beverage lost most that contained of its carbonation. no bubbles The and that results tasted are flat, shown having lost be most seen. of its carbonation. The results in are Table shown 1. 11. In Experiment 3, what is the mos in Table 1. dents used the plastic bottle rat Table 1 can? Compared to an aluminum Adapted from David Kagan, “The Shaken by The A. American rolled more Association rapidly of down Physics the T B. made bubbles in the liquid e C. contained a greater quantity Experiment 1 Roll time D. had thicker walls and was le The students added 1 before L of a liquid—tap shaking after water shaking containing Trial no bubbles—to Liquid an empty can, (sec) sealed the can, (sec) and found its roll time. Next, they added 1 L of the tap water to a second 1 empty tap water can, sealed it, shook 1.75 it, and immediately 1.75 found 2 its roll soapy time. water They repeated 1.97these procedures 2.15 using soapy 3 water flat-tasting containing many 1.75 bubbles, and a carbonated 1.96 beverage that beverage contained no bubbles and that tasted flat, having lost most of its carbonation. The results are shown in Table 1. 12. Based on the results of Experim of the following trials, before sh age speeds of the cans the same? F. Trials 1 and 2 G. Trials 2 and 3 H. Trials 2 and 4 J. Trials 3 and 5 11. In Experiment 3, what is the mos dents used the plastic bottle rat ACT-64E-PRACTICE Table 1 46 can? Compared to an aluminum GO ON TO T A. rolled more rapidly down the B. made bubbles in the liquid e Roll time C. D. contained a greater quantity had thicker walls and was le
Page 1 and 2: SCIENCE TEST This document contains
Page 3 and 4: Answer: G. time to reach seismograp
Page 5 and 6: C. nonzero, and the same as the amp
Page 7: 4 4 δ -26 (surface) 0 -22 -18 -14
Page 11 and 12: Answer: D. In Experiment 2, the rol
Page 13 and 14: Figure 1 shows the relative absorpt
Page 15 and 16: We can see that the carbon from CO
Page 17 and 18: PA-11 sank in liquids 1 through 5 a
Page 19 and 20: test tubes. The procedure was repea
Page 21 and 22: Answer: D. Once again, we see an it
Page 23 and 24: DNA in a cell is correlated with th
Page 25: B. For a given organism, the amount

SCIENCE TEST

Create successful ePaper yourself

Delete template?

Save as template?