The Earth
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卡片预览 (17 张)
What is the best model for the shape of the earth
A sphere (any kind of ball in ex)
What is the coordinate system of the earth
Latitude and longitude
Latitude lines are drawn from ——and measure —-
East to west North to south
Longitude lines are drawn from the —– and measure from —–
North Pole and South Pole East to west
Latitude is based on
Polaris
Longitude is based on the
Sun
The closer the isolines
The steeper the gradient
Gradient =
Change in field value/ distance
The altos use of Polaris is equal to
The latitude of the observer
At sea level what location is closest to the center of the earth?
The North Pole
Where is the greatest force caused by earths gravity?
The North Pole
The best evidence that earth is a sphere is
Pictures from space
What is the Equatorial circumference of the earth? 40,0??
40,076
What is the polar circumference of the earth? 40,00?
40,008
As an observer travels north the altitude of Polaris
Increases
Where is Polaris seen on the horizon
the equator
the shape of earth is an
Oblate spheroid