Penn State Astro 001 Exam 1 Exam Review | 77 Questions with 100% Correct Answers | Verified | Latest Update 2024
What causes day and night? - ✔✔Rotation of Earth on its Axis
How does the Sun appear to move in the sky in the course of a day? - ✔✔East to West bc of Earth's rotation. The stars and planets move the same way, also bc Earth's rotation
What happens to the Earth in one year? - ✔✔It orbits the Sun one time
Why do we have seasons? - ✔✔Tilt of Earth's axis (not changing from Sun). The tilt is about 23 degrees
How is the Earth's axis tilted when we have summer in the Northern hemisphere? - ✔✔With the N. Pole toward Sun
What season is it in the Southern hemisphere when it is summer in the Northern hemisphere? - ✔✔Winter
When does Winter begin, and what does it entail? - ✔✔Begins Dec. 21. Nights longer than Days.
When does Spring begin, and what does it entail? - ✔✔Begins March 21. Days and Nights are equal.
When does Summer begin, and what does it entail? - ✔✔Begins June 21. Days longer than Nights.
When does Fall begin, and what does it entail? - ✔✔Begins Sept. 21. Days and Nights are equal.
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Why do seasons happen? - ✔✔Seasons would NOT happen if the Earth's axis were not tilted. Distance between Earth and Sun does not change much over the course of the year so temp. does not change much for that reason.
What happens to the Moon in 1 month? - ✔✔It moves around the Earth one time
What causes the phases of the Moon? - ✔✔Sun is lighting different fractions of the part of the Moon we can see on Earth
What is the order of the phases of the Moon? - ✔✔1. New
- Waxing Crescent
- First Quarter
- Waxing Gibbous
- Full
- Waning Gibbous
- Third Quarter
- Waning Crescent
- New
When is the Full Moon visible? - ✔✔Only at night. It transits at midnight, rises at 6 hours earlier (at sunset) and sets 6 hours later (sunrise)
When is the New Moon visible - ✔✔The new moon is visible during the day. It transits at noon, rises 6 hours earlier (at sunrises) and sets 6 hours later (at 6 pm)
What does Transit mean in terms of Moon Phases? - ✔✔In relation to when the moon rises over a certain point.
How are the Sun, Earth, and Moon positioned when it is New Moon - ✔✔Sun- Moon- Earth
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