Activity 5.8 geologic history of southeastern pennsylvania date review fig. 5.19. then stady the portion o sares of 200-220 million year-old mesoaoic sand and mad that were deposi valley. me red colored areas are bodo of baalt alou, i̇90 million years old. paleonte and preamheian rob 252 million years old and colored pale brow d a geologic map of pennsylvania in fig as.& .1. the green-colored areas are ex ted in lakes, sreams, and fickds of a loeg, narrow 10 mles rocks mesozoic- rocks pottstown mesozoic sedimentary rocks paleozoic rocks figure a5.8.1 a based on their geometries (as viewed from above in map view), what kind of igneous bodies on the map are labeled a b based on their geometries (as viewed from abowe in map vicew), what kind of igncous boudies on the map are labeled b (more than one answer is possible)? creflect& discuss if you could have seen the landscape that existed in this part of pennsykania about 200 million years ago (when the bodies of igneous rock were lava), what else would you have seen on the landscape besides valleys, streams, lakes, and fields? explain your reasoning.

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.

Light waves can move through , but they travel fastest when they move through a(n) .