DOCUMENT VIEW AHEAD EXAM QUESTIONS FULL SOLUTION GUIDE.pdf

DOCUMENT VIEW AHEAD EXAM QUESTIONS FULL SOLUTION GUIDE




Question:
At present, our axis is tilted.

Answer:
at 23.5* from the plane of the ecliptic



Question:
Plane of the Ecliptic.

Answer:
the plane along which the Earth revolves around the sun



Question:
Axial Parallelism.

Answer:
our axis of rotation points toward the North Star in the northern hemisphere and remains parallel to
itself as we revolve around the sun



Question:
Earth revolves around the sun in an.

Answer:
oval, not a circular, path



Question:

, Aphelion.

Answer:
earth is farthest from the sun in July



Question:
Perihelion.

Answer:
earth is closest to the sun in January



Question:
There is a small difference in the solar radiation reaching the earth from the aphelion to the
perihelion because.

Answer:
the distance between the sun and the Earth at the aphelion = 152,171,500 km while during the
perihelion it is 147,166,480 km away from the sun



Question:
Subsolar Point.

Answer:
the point at which the sun's rays are striking the Earth's surface at a 90* angle because of the
curvature of Earth, this sun angle only occurs at one line of latitude at any given time the subsolar
point migrates with the seasons from 23.5*N to 23.5*S latitude; therefore, the sun's rays never reach
an angle as high as 90* at latitudes higher than 23.5* North or South Latitude



Question:
Equinox.

Answer:
occurs in March and September, and are periods when the subsolar point is at the equator