motion depends on declination. the sky at the north pole at the north pole, the north celestial pole...

13
Motion Depends on Declination

Post on 20-Dec-2015

221 views

Category:

Documents


1 download

TRANSCRIPT

Motion Depends on Declination

The Sky at the North Pole

• At the North Pole, the North Celestial Pole is at the zenith

• Stars never rise or set• Planets, Moon, and

Sun do rise and set…Why?

Stars Rise and Set at the Equator

The Sky at Our Latitude

The Sky at Southern Latitudes

Sun Changes Declination

The Arctic and Tropical Regions

• How are the arctic and tropical regions defined?

• Can you answer this without looking at your books?

• Have you ever been to these regions?

Back to the North Pole

Back to the Equator

Cold Arctic Regions

Tropical Heat

• In the Tropics, Sun is always close to zenith

• In the Tropics, the sun reaches the Zenith at some point in the year

• Lots of heating due to sunlight

Land of the Midnight Sun

The Sky for Navigation