Lecture #2 [Mapping and Earth's Movements]

Question 1

Geographical Grid

Answer 1

system of location. uses grid system- graticule uses a network of meridians (long) and parrallels (lat)

Question 2

FOUR important lines and points on geographic grid

Answer 2

Earth’s rotational axis- connects the points of max flatness

North Pole

South Pole

Equator

Question 3

Mapping Basics

Answer 3

title
date
legend
direction
location
data source
projection type
scale

Question 4

March of the seasons

Answer 4

september 22/23 (autumnal equinox)
june 20/22 (summer solstice)
march 20/21 (vernal equinox)
december 21/22 (winter solstice)

Question 5

March of the seasons

Answer 5

september 22/23 (autumnal equinox)
june 20/22 (summer solstice)
march 20/21 (spring equinox)
december 21/22 (winter solstice)

Question 6

five reasons for seasons

Answer 6

1. revolution
2. rotation
3. tilt of earth’s axis
4. axial parallelism
5. sphericity

Question 7

revolution

Answer 7

earth goes around sun, takes whole year

Question 8

rotation

Answer 8

earth rotates on axis, takes 24 hours

Question 9

tilt of earth’s axis

Answer 9

tilted 23.5* from plane of ecliptic

Question 10

Axial parallelism

Answer 10

• axis maintains alignment during orbit around the sun.

- North pole points towards the north star (polaris)

Question 11

Plane of ecliptic

Answer 11

if a flat square was slid inbetween the earth’s two halves at the equator

Question 12

Solar altitude

Answer 12

angle between the horizon at a particular location on earth’s surface and the sun

Question 13

declination

Answer 13

the latitude of the sub solar point (latitude of point on earths surface for which the sun is directly overhead at solar noon)

is only at one latitude each day; migrates annually from 23.5N (summer) to 23.5 (Winter)

Question 14

How does the angle of sun affect the days

Answer 14

never directly overhead anywhere except between the tropics
longer hours in summer
shorter in winter