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GEOG 111 Assignment #2

# GEOG 111 Assignment #2 - Erin Tait Lab Mathematical Basics...

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Erin Tait Lab: Mathematical Basics for the Study of Physical Geography This laboratory is about communication of scientific information. You need to be as precise, clear and informative with this kind of communication as possible. Hand in page1-2, graphs, 1 extra page Due January 24-27 1. Give the dimensions and units for the two following examples using the background material below: a. DENSITY = MASS / VOLUME Dimensions (volume basic units) = _________________________________ Metric (SI) units = ________________________________________________ b. VOLUME of WATER FLOWING = VOLUME / TIME Dimension (basic units) = ___________________________________________ Metric (SI) units = _________________________________________________ 2. Convert the following to standard form: a. .0000000567 = ______________________ Sig. figs? ____________ b. .0001460 = _________________________ Sig. figs? ____________ c. 3250076 = _________________________ Sig. figs? ____________ 3. Re-express this number in exponential form with 3 sig. figs. 3467219 ________________________ 4. Use the table on the third page. a. Round off each value in Column 2 to three significant digits (or 3 sig figs) and put the new values in Column 6 [rounded e x ]. b. For each x in Column 1, compute x 4 and put them in Column 5 of the table. c. Look at the data in Column 6 and Column 2. Has rounding off the numbers made the numbers more or less difficult to use in other calculations? ________ Has the rounding process changed the values very much? ____________________ G111 – Lab Assignment #2 – Jan 18 th , 2011 1

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Erin Tait Plotting 5. Use graph paper. Use the horizontal axis for x and the vertical axis for x2, x 3 , x 4 , etc.. Use the short side of the graph paper for the horizontal (x) and the long side for the vertical. Use 100 units per cm on the vertical and label it every 200. Use 0.5 units per cm on the horizontal and label it every 1. a. Plot x 2 and x 3 and x 4 against x. Remember to connect each point for x 2 to the next point for x 2 with a straight line. Do the same for the other functions x 3 and x 4) b. Compute the value of each curve when x=0. x 2 = ________ x 3 = ________ x 4 = ________ 6. Plot e x against x on the same graph.
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