AST101H1 Lecture Notes - Lecture 5: Lunar Phase, Angular Diameter, Northern Hemisphere

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Netterfield

Document Summary

The angular size of an object depends on. Moon phases are caused by the sun"s position relative to the moon. Only half the moon is illuminated at any one time. The phase changes as the moon orbits the earth. The moon rotates as it orbits, so the same side always faces the earth. The far side of the moon can never be seen from earth. When aligned right, the moon can cast a shadow on the earth (solar eclipse) or the earth can cast a shadow on the moon (lunar eclipse) Clicker question 1: what causes seasons: the earth is closer to the sun in june/july, the sun is higher in the sky in june/july in the northern hemisphere (but lower in the. Southern hemisphere: falling leaves change the amount of carbon dioxide in the atmosphere (greenhouse effect, volcanic activity. Clicker question 3: the sun and the moon have (roughly) the same angular size.