EPSC 180 Lecture 1: EPSC-180-class-notes

• School: McGill University
• Department: Earth & Planetary Sciences
• Course: EPSC 180
• Professor: Olivia Jensen

Document Summary

While earth"s orbit around the sun does play a role in the changing of the seasons, it"s not because the earth receives more solar energy when it"s closer to the sun or less energy when it"s further away. The main reason we have the seasons is due to the. The ea(cid:396)th"s o(cid:396)(cid:271)it is al(cid:449)a(cid:455)s o(cid:374) a(cid:374) i(cid:374)(cid:272)li(cid:374)atio(cid:374) of (cid:1006)(cid:1007). (cid:1008) deg(cid:396)ees. The earth is going around the sun and depending on where it is, the weather will change. 4 times a year the earth hits different points around the sun, which gives us 4 different seasons. It is always at the same distance from the sun. The surface of the earth has been solid for the past 4. 4 million years: multiple impacts, formed from flurry of impacts on the ancient earth. The apparent path of the sun"s motion on the celestial sphere as seen from earth is called the ecliptic.