Question

The beginning of autumn in North America is in September, but the beginning of autumn in South America is in March. The diagram shows the positions of Earth, the moon, and the sun on one day in September and one in March.
Why does autumn start in different months of the year in North America and South America?

 



 (10 points)
A. 

Earth’s orbit around the sun is not a perfect circle.

B. 

Earth’s axis has a 23.5-degree tilt

C. 

North America has a larger landmass than South America

D. 

The moon has a greater pull on South America than on North America

​

Answer 1

Answer: ,Option B.

The Earth's axis has a 23.5 degree tilt.

Explanation:

The Earth axis of rotation is tilted to 23.5 degrees which is relatively to the orbital plane, this lead to differences in seasons of the places on Earth at a particular time. The angles varies overtime but moon gravitational pull prevent it from shifting more than a degree. There is different in seasons in the northern and southern hemisphere because at a time one part of it exposed to the Ray's of sunlight than the other which lead how the Earth's revolve round it's axis.