Is the Earth Perfectly Round?
Dividing the polar diameter by the equatorial diameter would give a...
roundness ratio of 1
What does oblate mean?
squished
What is the distance between the polar and equatorial diameter?
27 miles
How big must the sphere be for the difference to be undetectable?
8000 miles
As the distance from the earth's center increases, the weight of the object decreases. This is known as what type of relationship?
An indirect relationship
What is the force that attracts objects on the Earth's surface to the middle?
Gravity
Who first proposed that the earth was not perfectly round?
Isaac Newton
What does Newton's Theory of Gravitational Objects state?
That the objects on Earth's surface are attracted to the center.
How long would the equatorial and polar diameters be if the earth was a perfect sphere?
The diameters would be equal.
How does the Earth appear from space photos?
The earth is perfectly round.
Why can't the polar and equatorial diameter be the equal?
The earth is spinning on it's axis, and the sides bulge out
What is the amount of gravitational force on an object called?
Weight
What shape is the Earth?
an oblate spheroid
Where do objects weigh slightly less?
at the equator
Where do objects weigh slightly more?
at the poles
In a perfect sphere, all point on the surface are at an ________ distance from the center of the sphere.
equal
What would happen to your weight if the earth was totally round?
it would be the same no matter where you are.