Exam (elaborations)
MAC1501 Assignment 6 Semester 2 2024
- Course
- Institution
MAC1501 Assignment 6 Semester 2 2024
[Show more]
Content preview
MAC1501 ASSIGNMENT 6 SEMESTER 2 2024Sunspots appear darker then their surroundings because they - (ANSWER)Are cooler than their
surroundings
What is solar wind? - (ANSWER)A stream of shared particles flowing outward from the surface
of the Sun
How does the number of neutrinos passing though your body at night compare with the number
passing through your body during the day? - (ANSWER)About the same
Which of these star clusters is oldest - (ANSWER)A cluster whose brightest main-sequence stars
are yellow
If the Star Alpha Centauri were moved to a distance 10 times farther than it is now, its parallax
angle would - (ANSWER)Get smaller
X-ray images of the Sun generally show the - (ANSWER)Corona
Listed following are events or phenomena that occur during either the part of the sunspot cycle
known as solar minimum or the part known as solar maximum. Match these items to the correct
part of the sunspot cycle. - (ANSWER)Solar Maximum:
-Occurs about 11 years after a solar maximum (on average)
-Solar flares are most common
-Auroras are most likely in Earth's skies
-Sunspots are most numerous on the Sun
-Orbiting satellites are most at risk
Solar Minimum:
-Occurs about 5 to 6 years after a solar maximum (on average)
, Energy balance in the Sun refers to a balance between... - (ANSWER)The rate at which fusion
generates energy in the Sun's core and the rate at which the Sun's surface radiates energy into
space
Before we can use parallax to measure the distance to a nearby star, we first need to know... -
(ANSWER)The Earth-Sun distance
Which of the following is a valid way of demonstrating parallax for yourself? - (ANSWER)Hold
up your hand in front of your face, and alternately close you left and right eyes
What is the cause of seller parallax? - (ANSWER)Earth's orbit around the Sun
The more distant a star, the.... - (ANSWER)smaller its parallax angle
Approximately what is the parallax angle of a star that is 20 light-years away? - (ANSWER)0.16
arcsecond
Suppose that a star had a parallax angle of exactly 1 arc second. Approximately how far away
would it be, in light-years? - (ANSWER)3.3 light-years away
Which of the following best explains why nuclear fusion requires bringing nuclei extremely
close together? - (ANSWER)Nuclei normally repel because they are all positively charged and
can be made to stick only when brought close enough for the strong force to take hold.
Compared to a main-sequence star with a short lifetime, a main-sequence star with a long
lifetime is... - (ANSWER)Less luminous, cooler, smaller, and less massive
Compared to a high-luminosity main-sequence star, stars in the upper right of the H-R diagram
are - (ANSWER)Cooler and larger in radius
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 tivakiok. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
64438 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now