Images

Question 1

Aerial photographs

Answer 1

photographs of the Earth’s surface taken by planes

Question 2

When overlapping aerial photographs are combined, what do they produce?

And what tool do you use? What do you end up seeing?

Answer 2

stereogram

stereoscope

3D version that’s vertically exaggerated (slopes look steeper than they actually are)

Question 3

What do satellite images reveal?

what are indicators of these things

Answer 3

volcanic eruptions, hurricanes, oil spills, or impact craters

ash plumes, oil slicks

Question 4

What are topographic maps?

AKA

Answer 4

2-D scale models of Earth’s surface from above

quadrangles

Question 5

How is elevation shown on a topographic map?

Answer 5

countour lines

Question 6

Who provides topographic maps?

Answer 6

U.S Geological Survey

Question 7

What information does each topographic map have? (7)

Answer 7

location, date of it being drawn, revised, scale, north arrow, names of adjoining quadrangles, lines of latitude and longitude

Question 8

Where are the boundaries of the quadrangle labeled? 3 parts to the label

Answer 8

four corners of the map
degrees, minutes(‘), seconds (‘’)

Question 9

What is a 15-minute series

Answer 9

maps that cover 15 minutes of longitute and 15 minutes of latitude

Question 10

how many minutes are in 1 degree? how many seconds are in a minute?

1/2 a minute is the same as

Answer 10

60
60

30”

Question 11

What is a map scale?

what are the two ways they are expressed

Answer 11

relationship btw distance on map and distance on actual surface

fractional or graphic scales

Question 12

fractional scales

Answer 12

tell you how much surface on map has been reduced from its actual size

#:#

Question 13

What does the first number in a fractional scale mean? Second? What units do they represent?

Answer 13

1 unit on map equals (second #) units in real life - SAME units

Question 14

What is a graphic scale

aka

Answer 14

bar drawing that’s divided into segments to show relationship btw distance on the map and distance in real life

bar scale

Question 15

what is the common fractional scale

Answer 15

1:24,000

Question 16

What is the left side of the graphic scale depict?

Answer 16

divisions into fractions for precision

Question 17

if the second number of a fractional scale is large, is this a small or large fractional scale? why?

how zoomed out it is, area covered, detail

Answer 17

small
more zoomed out (large area) but little detail

Question 18

if the second number of a fractional scale is small, is this a small or large fractional scale? why?

how zoomed out it is, area covered, detail

Answer 18

large
more zoomed in, less area, more detail

Question 19

dimensional anaylsis with scales steps

Answer 19

1. place your given in the numerator of first box
2. place the fractional scale as your second box appropiately (if the numerator in the first box represents units on map-what goes up comes down, so place the number of the fractional scale that represents units on map)
3. start plugging in units from back page until you get answer

Question 20

What were land elevations originally established by? What did they depict?

what were the plates made of

Answer 20

land surveys
selected places called bench marks (BM)

brass

Question 21

Contour interval

Answer 21

difference in elevaaation btw adjacent contour lines

Question 22

what are the three general rules for reading contour lines

Answer 22

1. contour line connects points of equal elevation
2. contour line never splits or branches
3. contour lines occur in pairs when opp. of a valley

Question 23

what do closely spaced contours indicate?

Answer 23

steep slopes

Question 24

how are hills represented?

Answer 24

closed contour lines

Question 25

how are depressions represented?

Answer 25

clossed countours with hatch marks on inside of circle

Question 26

what do contour lines form as they cross streams?

upstream vs downstream

Answer 26

v

v points upstream, upstream goes throoughg downstream

Question 27

If I want you to find the elevation of the top of a hill, and it gives you the countour line surrounding the point, what is it’s elevation?

Answer 27

it must be above the elevation of the line surrounding it, but since there isn’t another contour line within it, it must be less than the elevation of that (not shown) contour

Question 28

If you were asked to find the distance btw 2 points, how do you go abt that?

aka

Answer 28

find the elevation of each point and subtract

relief

Question 29

index contour

Answer 29

every 5th contour line, thick line

Question 30

the water valley itself will look like what?

Answer 30

y

Question 31

what is a topographic profile

Answer 31

side view from one point on a topogrpahic map to another

Question 32

how to construct a topographic profile?

Answer 32

1. lay paper along the desired line
2. mark each place where the contour lines intersect paper and its elevation
3. plot on a graph and place the paper on x axis

Question 33

when drawing contour lines of an interval where should your lines go

Answer 33

souround included numbers, pass through exact elevation