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What is a Meridian?
Meridians are lines of longitude that passes through the north and south poles creating great circles?
How many minutes and seconds are in 1 degree?
60 minutes = 1 degree.
3600 seconds = 1 degree.
At a latitude of 45 degrees, a degree of longitude is how many miles?
Approximately 49 miles. A degree of longitude varies in size, minutes and seconds of longitude also vary, decreasing in size towards the poles
What is the maximum value of degrees for latitude and longitude?
Max latitude = 90 degrees.
Max longitude = 180 degrees.
How much does a degree of longitude measure at the poles?
Near 0 miles.
In which directions does the Earth rotate?
From west to east (counterclockwise) about the poles.
What is the perihelion?
The point of the earth's orbit that is nearest to the sun. It is measured to be approximately 91.4 million miles.
Approximately, what is the distance for a degree, a minute, and a second for latitude?
1 degree = approx. 69 miles. 1 minute = approx. 1.15 miles. 1 second = approx. 0.02 miles (over 100 ft).
What is the distance between the Earth and the Sun?
Approximately 93 million miles.
Where is the Prime Meridian?
Greenwich, England which is in London.
If you west travel from 0 degrees longitude to 60 degrees west, how many hours would you have lost?
4 hours.
How much does a degree of longitude measure at the equator?
Approximately 69 miles.
What is the aphelion?
The point of the earth's orbit that is farthest to the sun. It is measured to be approximately 94.5 million miles.
What are the eight planets of our solar system?
Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter.
Why do we have seasons?
Because of the earth is titled 23.45 degrees relative to the polar axis which cause the sun to shine more on the northern hemisphere during the summer solstice and more on the southern hemisphere during the winter solstice.
If you were at 23.45 degrees north latitude on June 21 or 22, where would the sun be at noon?
Directly overhead.
If you travel east and past the international date line, how would you adjust your calendar?
You would move a day backwards.
What is the mean radius of the earth?
Approximately 4000 miles.
What star is almost directly about the North Pole?
The North Star or Polaris.
What is the distance between the earth and the moon?
238,855 miles
What is the mass of the earth?
5.9722 x 1024 kg
Who was Eratosthenes?
A Greek geographer who calculated the equatorial circumference to be 40,233 km (25,000 mi) using geometric relationships. The circumference of earth taken from advanced satellite to be 40,072 km (24,900 mi).
What is the definition of geography?
Geography is the study of natural and human phenomena relative to a spatial dimension.
Given the date and latitude of the place, how do you find the latitude where the noon sun is directly overhead and the noon sun angle at the place.
First find the latitude where the sun is at 90 degrees using the analemma. Find the difference in latitude between the place and where the sun is at 90 degrees. Subtract the difference from 90 degrees and you get the noon sun angle at the place.
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