Earth- Time and Location
Geography 210 with Splinter at University of Wisconsin - Whitewater
About this deck
By: Brittany Frey
Textbook:
Introducing Physical Geography
Created: 2011-04-06
Size: 33 flashcards
Views: 3
Textbook:
Introducing Physical GeographyCreated: 2011-04-06
Size: 33 flashcards
Views: 3
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Geographic Grid
Lines of Latitude and Longitude
Latitude
Angular Distance North or South of Equater (run east to west parallel to the equator
- also known as parrallels
Tropic of Cancer
23.5 degrees north
Sun never gets higher than this
Tropic of Capricorn
23.5 degrees south
Sun never gets lower than this
Arctic Circle
66.5 degrees north
Anarctic Circle
66.5 degrees south
Degrees, Minutes and Seconds
- One degree of Latitude is equal to 60 minutes
- one minute is equal to sixty seconds
- 3600 second in one degree
Longitude
Angular distance east or west of a point on Earth's surface, measured from the center of the earth
- these lines run north and south
- also known as meridians
Rotation of the Earth
The earth rotates 360 degrees/ 24 hours (15 degrees an hour)
Time Zones
- Set up reletive to controlling meridian (about every 15 degrees) but political, economic and geographic constraints are also present
- run with lines of longitude
Great Circles
Any circle of the Earth's circumference whose center coincides with the center of the earth
- divide the world into two equal halves
Small Circles
Do not share earth's center
- all parrallels other than the equator are small circles
Shape of the Earth
Oblate Ellipsoid
Earth's axis
An imaginary straight line from pole to pole
Earth's rotation
- The spinning of the earth
- a day is one complete rotation of the earth
Three reasons Earth's axis and rotation are important:
- Latitude and Longitude axis point
- give us a convenient measure of time (day)
- effects physical and life processes
Rythms of the Sun Cause:
- day and night
- daily air temperature cycle
- motions of the atmospher and oceans
- weather systems and ocean currents
Tides
Result from the Earth's rotation and the moons gravitational pull. Tidal currents serve as the life giving pulse for plants and animals
1 degree of longitude
= 111 km at the equator and 0 kms at the poles
1 degree of latitude
= 111 kms
Polar Projection
- Centered on the pole
- meridians radiate outward from pole
- show only one hemisphere
- projection accurate for shape
Mercator Projection
- Shows a line of constant compass bearing as a straight line
- Used to display directional features such as wind direction
- accurate for size
Winkel-Tripel projection
minimizes distortion in area, distance and direction
Parts of the US that do not follow Standard time
- Arizona
- 1/2 of Indiana
- Parts of the UP
- these places all have a solar bias
Standard Time System
global time according to nearly standard meridians, normally one hour apart
Crossing the international date line eastward
Puts you back one day
Daylight Saving
Transfer an hour of light
Earth's Revolution
the earths travel around the sun. It takes approximatly 365.245 days (therefore leap year is required every four years)
Perihelion
When Earth is nearest to the sun
- January 3
Aphelion
When the earth is farthest away from the sun
- July 4
The Orbit of the Earth around the sun is:
Elliptical (oval)
Earth's average distance from the sun is
93,000 million miles
- it takes light 8 minutes and 20 seconds to hit earth
Seasonality
four seasons occur because the earth maintains a constant orientation of 23.5 degrees with respect to the perpendicular to the plane of the ecliptic) as it revolves around the sun
About this deck
By: Brittany Frey
Textbook: Introducing Physical Geography
Created: 2011-04-06
Size: 33 flashcards
Views: 3
Textbook:
Introducing Physical GeographyCreated: 2011-04-06
Size: 33 flashcards
Views: 3
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have used this website for three exams, and I see a huge difference in my test results.”
Naj
Naj