BIOC50H3 Lecture : lecture note 8

135 views3 pages
19 Jul 2010
School
Course

Document Summary

The earth"s tilted axis (23. 50) causes unequal distribution of incoming solar radiation across the planet"s surface, and with it creates the seasons. The earth, in its revolutions around the sun, wobbles between 23. 50 n. (tropic of cancer) and s. latitude (tropic of. During the vernal (spring) and autumnal (fall) equinoxes (march 21, and sept. 23), the sun is closer to the equator, and both hemispheres have identical daylengths. Tropics of cancer and capricorn have a fairly steady input of solar radiation, and thus experience relatively little seasonal variation this area is thus known as the tropics. During the winter solstice in the n. hemisphere, points north of the arctic circle (66. 50. N. ) experience 24-h darkness, points south of the antarctic circle (66. 50 s. ) experience. 24-h daylight (during the summer solstice, this situation is reversed); this creates dramatic physiological challenges for the organisms living in these areas www. notesolution. com.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions