The animation indicates a shadow growing to the east, because

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Presentation transcript:

The animation indicates a shadow growing to the east, because (1) the sun is rising in the east. (2) the Earth rotates the same way. (3) the sun is setting to the west. (4) shadows point toward the sun

ZENITH In the diagram at left, an observer in New York State “sees” the sun at three different noon-times during the course of a year (X, Y, and Z). How fast does sun move along its X, Y, or Z path? 15 o/hr Why does the Z path take the most time? It is the longest Which noon sun gives the longest shadow? X

Why does the path of the sun matter?

Why does the path of the sun matter? Spring / Autumn path is 6 am to 6 pm (12 hours) due E. to due W.

Why does the path of the sun matter? Spring / Autumn path is 6 am to 6 pm (12 hours) due E. to due W. Summer path is higher so more energy for more time.

Why does the path of the sun matter? Spring / Autumn path is 6 am to 6 pm (12 hours) due E. to due W. Summer path is higher so more energy for more time. Winter path is less energy for less time!

Summer path is NE  S  NW Spring/Autumn is E  S  W Winter path is SE  S  SW

(2) March 21 (4) They are all equal The diagram shows the apparent daily path of the Sun, as viewed by an observer at a certain latitude on three different days of the year. Which apparent Sun path provides the observer with the least insolation? (1) Dec 21 (3) June 21 (2) March 21 (4) They are all equal

Which apparent Sun path rises exactly (due) East and sets due West? The diagram shows the apparent daily path of the Sun, as viewed by an observer at a certain latitude on three different days of the year. Which apparent Sun path rises exactly (due) East and sets due West? (1) Dec 21 (3) June 21 (2) March 21 (4) They are all equal