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Astro 1 (PSU) exam 2 (2024 / 2025) Actual Questions and Verified Answers, 100% Guarantee Pass
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Astro 1 (PSU) exam 2 (2024 / 2025) Actual Questions and Verified Answers, 100% Guarantee Pass
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Astro 1 (PSU) exam 2.pdf file:///C:/Users/HP/Desktop/dddd/Astro%201%20(PSU)%20exam%202ASTRO 1 (PSU) EXAM 2 Questions & Verified
Answers
1. Copernicus
Answer Had idea of sun centered universe (heliocentric)
2. Keplers 1st law
Answer Planets revolve around the sun in elliptical orbits w/ sun at the focus
3. What best describes orbit of earth around the sun
Answer Ellipse that is close to a circle
4. Keplers 2nd law supports idea that when a plant is closer to the sun its speed is
greater - True or False
Answer True
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5. How did Kepler originally state the 2nd law
Answer A line joining a plant and sun sweeps out equal areas in equal intervals of time
6. Keplers 3rd law
Answer The square of a time period for an orbit of a planet is proportional to the cube of its
average distance from the sun. ( P^2 = A^3)
7. Saturn is 10 times as far from the sun as earth, how many times does earth orbit the
sun in time Saturn does once
Answer 30 times (30 years)
8. Besides discovery of moons orbit Jupiter, what else did Galileo find to prove earth wasn't
at center of universe?
Answer Phases of Venus
9. What does "P" represent in Kepler's 3rd law
Answer Orbital period
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10. Of the 4 Galilean moons which is closer to Jupiter?
Answer "IO"
11. Which moon of Jupiter is believed to have liquid beneath ice?
Answer "Europa"
12. Which moon of Jupiter is largest?
Answer "Ganymede"
13. Mass of Jupiter relative to earth
Answer 340 earth masses
14. Nearest planet to the sun?
Answer Mercury
15. Temp of Mercury
Answer 80 kelvin (-290 F)
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