Question

1/ Ultraviolet (UV) light is _____.

a. the longest wavelength of light visible to the human eye

b. the shortest wavelength of light visible to the human eye

c. invisible to humans

d. visible as the color viole

2/  The seasons occur because of _____.

a. the angle at which sunlight strikes the surface and by how long the sun shines on any latitude

b. Earth's elliptical orbit that brings northern latitudes closer to the sun in summer than in winter

c. variations in the Gulf Stream caused by the relationship of Earth's tilt to the sun as it orbits

d. extreme northern latitudes (North Pole) resulting in a deficit of heat energy

Answer 1

(1) . (C) Invisible to humans. Explanation : Ultraviolet lights have wavelength falling between 400 nm to 10 nm while visible light I have wavelength from 400 nm to 700 nm. (2) (a) The angle at which sunlight strikes the surface . and by how long the sun shines on any latitude. Explanation! Due to earth's filt in axis, a past will lean toward sun and more sunlight will Strike on that surface which results in summer and lix monts later that side will lean away from sun and less sunlight will result in winter . Rest of Seasons occur in between six months period. 0