Exam (elaborations)
PSU Astro 7N Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
- Course
- Institution
PSU Astro 7N Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
[Show more]
Content preview
PSU Astro 7N Exam 1 | Questions And Answers Latest {2024- 2025} A+Graded | 100% Verified
What two properties of a planet affect the gravity we feel on its surface? - Mass and radius
Two planets have the same radius. If Planet A is 5 times more mass than Planet B, how does gravity
differ on the surfaces of the two planets? - Gravity is 5 times stronger on planet A
Say that there were a planet X in our Solar System with a mass 1/4 the mass of Earth and a radius 1/2
the radius of Earth. How will the gravity on its surface compare to the surface gravity of Earth? - Surface
gravity on planet X is the same as on earth
A planet in a nearly circular orbit with its rotation axis tilted by 5 degrees relative to its orbital plane
around its star would ... - Have seasons that are not very different from each other as compared to Earth
The rotation axis of the Earth is ... - Tilted at about 23 degrees relative to the axis of the Earth's orbit
around the Sun
In the diagram above, what season and planet is being represented by the red X on the planet on the
left in orbit around the Sun? -
When is the waning gibbous moon highest in the sky? - About 3 am
What phase is the Moon in, when observed by the person standing on the Earth in the diagram above? -
New
At what time will the Moon set on the day of a Solar eclipse? - Sunset
Stars that are in the same constellation ... - are likely to be at very different distances from us.
,The "North Star" is a star in the constellation of Ursa Minor, which lies just above the North pole of
Earth. Which of the following is true? - Ursa Minor is a Zodiac constellation in the summer but not in the
winter
A particular Zodiac constellation is high in the sky at midnight in April. Where will it be in October? -
Near the Sun in the daytime sky
What do you expect the spectrum of an object that is 1,000,000 Kelvin to be like? - It should peak at X-
ray wavelengths
As compared to a cool star, a hotter star emits ... - Shorter wavelength, higher frequency, bluer color
Radio waves can travel large distances without interference because ... - They have longer wavelengths
than visible light
Compared to ultraviolet radiation, X-rays have a wavelength that is ... - Shorter
Star A is 4000 K, and Star B is 8000 K. Which of the following is true? - The color of Star A is redder than
Star B
In the diagram above, what is happening in the box in the center? -
A star is a hot, dense gas surrounded by a cooler, low density atmosphere. What type of spectrum will a
star create? - Absorption Spectrum
What makes a transition from a lower energy state to a higher energy state when a photon is absorbed
into an atom? - Electron
An emission line is produced when: - An electron passes from a higher to a lower energy level
Bright lines in an emission spectrum represent: - particular energies of light that are emitted from a
distant object
, The faintness of an object that a telescope can observe is mostly determined by the ... - Diameter of the
opening of a telescope
In what ways does a 5 meter telescope outperform a 1 meter telescope?I - its images are 25 times
brighter than a 1 meter
A mountain top is a good location for optical telescopes because the site ... - Is above much of the
atmosphere
Which statement about the rotation of the Inner planets is true? - Venus rotates in the opposite
direction from the three other inner planets
Which of the following is TRUE? - Mercury rotates exactly one and a half times for every one revolution
around the Sun.
Why do the orbits of the planets all lie in nearly the same plane? - The early solar nebula flattened into a
disk.
Of these choices, which planet has the most moons? - Saturn has more than Earth, Mercury, Mars, and
Venus
Venus is visible to us ... - only near sunrise or sunset
A planet is in orbit around the Sun. The semimajor axis of the orbit is 5 Astronomical Units (AU). Use P^2
= a^3 to calculate the period of the orbit, in years. - 11.2 years
In the above diagram, how should the parameters of the white curve be changed in order that it
matches the observed distance versus time graph of Callisto? - increase P and shift the curve
How do most craters on moons form? - impact of asteroids
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller oneclass. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.98. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now