Astro 1 Final Exam PSU 100 Questions with 100% Correct Answers Verified Latest Update 2024
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Course
Astro 1 PSU
Institution
Astro 1 PSU
What is a light year?
Answer distance that light travels in 1 year
2. What is the closest star to Earth besides the Sun? (4.2 ly away)
Answer proximacentauri
3. What is the age of the universe?
Answer 14 billion years
4. What is our cosmic address?What is the Local Group?
Answer Earth, solar...
8. How old is the Sun/solar system? How much longer will it live?
Answer 4.5 billion,live to 10 billion
9. What is a star?
Answer glowing ball of hot dense gas that generates its own energy vianuclear fusion
10. What is the reason that we have seasons on Earth?
Answer tilt of the earth's axisdetermines what hemisphere leans towards the sun
11. If Earth's orbit were a perfect circle, how would this affect seasons?
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,Astro 1 Final Exam PSU 100 Questions with 100 Correct Answers Verif... file:///C:/Users/HP/Desktop/dddd/Astro%201%20Final%20Exam%
Answer Wouldnot because earth's orbit is already very close to a perfect circle
12. moon phases in order
Answer new moon, waxing crescent, first quarter moon, waxinggibbous, full moon, waning
gibbous, third quarter moon, waning crescent
13. How long does it take to complete all the phases?
Answer 29.5 days
14. What are the two types of eclipses (only solar and lunar) and what phasedoes the
Moon need
to be in for each one of the eclipses to occur?
Answer lunar
earth blocks sunlight frommoon, full moon
solar
Answer moon passing directly in front of sun, new moon
15. If you see that the Moon is full, what phase will someone in Australia see?
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