Exam (elaborations)
ASTRO 205 QUIZ 1 QUESTIONS AND ANSWERS RATED A.
- Course
- Institution
ASTRO 205 QUIZ 1 QUESTIONS AND ANSWERS RATED A.
[Show more]
Content preview
ASTRO 205 QUIZ 1 QUESTIONS ANDANSWERS RATED A.
1. Suppose we look at two distant galaxies: Galaxy 1 is twice as far
away as Galaxy 2. In that case, which of these statements must be
true?
1- Galaxy 2 must be twice as old as Galaxy 1.
2- Galaxy 1 must be twice as big as Galaxy 2.
3- We are seeing Galaxy 1 as it looked at a later time in the history of the
Universe than Galaxy 2.
4-We are seeing Galaxy 1 as it looked at an earlier time in the history of
the Universe than Galaxy 2.
Correct Answer -5
2. Astronomers infer that the Universe is expanding because distant
galaxies all appear to __________________.
1- be growing in size
2-rotate rapidly
3-be made mostly of dark matter
4-be moving away from us, with more distant ones moving faster
Correct Answer -be moving away from us, with more distant ones moving
faster
3. On the Cosmic Calendar, the entire 14-billion-year history of the
Universe is compressed into a single calendar year. The Big Bang
occurs at the stroke of midnight on January 1, and right now is
midnight one year later.
, Match the following major events to their (approximate) time on the
Cosmic Calendar.
Correct Answer -
Distances between objects in space are so vast, they are difficult to
comprehend. Therefore, it can be helpful to look at scale models.
Consider a scale model of the Solar System where the Earth-Sun distance
(149,600,000 km) is represented as 1.0 metre. In this scale model, how far
would Jupiter be from the Sun?
Correct Answer -5.2 meters
A typical galaxy is a ___________________.
1- a collection of billions or trillions of stars, bound together by gravity
orbiting a common centre
2- system consisting of one of a few stars orbited by planets, moons, and
smaller objects
3- relatively small, icy object orbiting a star
4-large, glowing ball of gas powered by nuclear energy
nearby object orbiting a planet
Correct Answer -collection of billions or trillions of stars, bound together
by gravity orbiting a common centre
Which of the following best describes what we mean by the Universe?
1-A vast collection of planets, stars, and galaxies.
2-The total matter and energy in existence.
3-The Universe is another name for our Milky Way Galaxy.
4-All the galaxies in all the superclusters.
Correct Answer -The total matter and energy in existence.
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 AcademicAllure. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.09. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
71947 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now