ASTR101 Lab Syllabus
Purpose of Lab
The ASTR101 Labs are intended to let you work through some key projects that astronomers have done to
advance our state of knowledge. In these labs, we will emphasize how observational data can be effectively
used to st
Gamma rays & X-rays have shortest
What about their photon energy?
Radio waves have longest wa
Stellar Properties (Part 2)
3. LUMINOSITY: How much energy is radiated?
The energy emitted every second by a star depends on its
temperature and its size.
This isnt quite so straight forward; since what we
observe on Earth depends on the distance to the
Unusual things happen in the The Sun generates energy from
Suns core. hydrogen fusion.
Energy is released when protons come together.
0 Conditions are extreme.
0 One proton transforms into a neutron,
Protons normally repel each other. 3
ASTR 101 Deming
What is an astronomical unit (AU)?
How long does it take for light to travel from the Sun to Earth? Aristotle C perll cu
& Ptolemy ' 1512 Tycho Brahe
I Geoeentrie hypothesis . Reintmdnced helio I 1577 demonstrated that comets
Stellar Properties (Part 3) and the HR Diagram
5. RADIAL MOTIONHow fast is it movin ?
This is motion toward or away from the observer. v
1. Take spectrum.
2. Identify the spectral lines with knovm wavelengths.
3. Measure the amount of red shift or blue
ASTR 101 Deming
assume 6 AM for sunrise; 6 PM for sunset
Show how the Moon would look from each numbered position.
New waxing Fix-st waxing Full waning Last hing
b10011 Creseni Quarter Cibbous khan Cihhou: Quarter
Life of the Sun (1 solar mass star)
A region of ISM collapses due to gravity and forms a
protester. Due to the collapse, the gas heats. Heated gas
exerts a slight outward pressure.
3. End of main sequence lifetime
Production of He due to H ss
Scientic Method and Sky Appearance
in. What is science? _ ScientificAMethod
mausdencmethod. 2-HT and
.Aadu-unchypouusishmm 'l u 1] "I ml'
m-mnmudsaibe mammalian, )
Astronomy 10] Deming Astronomy an Six Continents
Archeoastronomystudy of astronomies of ancient people based on orientation of buildings,
arrangement of markers so an observer can sight celestial objects, structures suspected of being
observatories, and w
1. What is the ecliptic? SEASONS
The ecliptic is inclined to the celestial equator at an angle of degrees.
2013 Rises Sets Day/night Wheres the Sun?
Vernal Equinox 3/20 due E due W 12h/12h crosses eel. equator
Summer Solstice 6/21 NE NW ~15hl~9h 23.5N 0f
Lecture Summary (3/12 & 3/14)
The extreme drop in the intensity of sunlight was highlighted before moving to planets of
the outer solar system. Jupiter was used to introduce the jovian planets (Jupiter, Saturn, Uranus,
Neptune). These planets are massive,
PART I: MULTIPLE CHOICE QUESTIONS (50 pts.)
Using what you have learned in ASTR 101, choose the BEST answer to each of the following
questions and indicate your choices on the answer sheet. (2 pts. each)
1. The revolution of the Earth causes
A. our day an
Here is the lecture summary for the first lecture. These weekly summaries are not meant to be a
substitute for lecture, but rather a starting place if you miss a lecture or as a review of the most
important concepts for the week. Students have found the s
REMINDERS: Homework #1 is due: Feb. 7 at the beginning of lecturesee p. 7 of syllabus.
Please read INSTRUCTIONS at the top of this page before beginning.
The Astrology Experiment is due at the beginning of your discussion section on Feb. 12 or 13
Exam I will be Thursday March 7 during lecture. There will be a Review Session on March 6
from 4-5 in CSS 2428. Bring your questions.
Lecture Summary 2/26, 2/28, and preview 3/5)
The Moon, our nearest neighbor in space, has been studied extensively, i
Keep up with the READING. Study handouts and review your notes.
LECTURE SUMMARY (2/5 & 2/7)
A green handout on lunar phases and eclipses was distributed in lecture. Keep in mind that how
the Moon appears to us on Earth depends on the position of the Sun (
MULTIPLE CHOICE QUESTIONS (50 pts.)
Choose the BEST answer to each of the following questions using what you have learned in
ASTR 101. Indicate your choice on the scantron. (2 pts. each)
1. Which other body in our Solar System has confirmed current volcan
ASTR101 Spring Homework #1 Solutions (20 points)
1. Look at p. 3 (in book) and watch the video at http:/www.youtube.com/watch?
v=qxXf7AJZ73A. Whats your personal reaction to the scale of the universe? Before
taking ASTR 101, what did you know about the un
The first exam is scheduled for March 6.
Also HW #2 is due Feb. 21 at 11 am in lecture.
If you do not have a lab book, you need to buy one.
Have a nice weekend.
Lecture Summary (2/12 and 2/14)
The overturning of the geocentric theory in f
You should be studying for the first exam scheduled for March 7. A Review Sheet was provided
Have a nice weekend.
Lecture Summary (2/19 and 2/21)
The age of the solar system was given as 4.6 billion years old. High-density pla
Lecture Summary (4/9, 4/11 and preview 4/16)
Demonstrations were done using water and sound waves to illustrate the Doppler Effect.
A handout showed the effect of motion on spectra. Much useful information can be determined
by studying binary stars. Masse
Homework 2 Solutions
1. For each of the following, make a sketch showing positions of the Sun, Earth & Moon. For each
name the lunar phase seen in College Park & give the approx. time the Moon rose. [9 pts.]
a) The Moon sets at noon.
The moon is midway be
Please be sure that you review your notes on a regular basis. This material is more difficult than
material that was on the first exam. HW #4 is due April 9 in lecture.
Lecture Summary (3/26 & 3/28)
Since 1995 the presence of exoplanets has been revealed
ASTR101 - HW4 Solutions
1. Explain why solar fusion only takes place in the Suns core.
Solar fusion requires two nuclei to overcome electromagnetic repulsive forces and combine
together by the strong nuclear force which becomes effective only over very sm
EXAM I (100 pts.)
Review lecture activities and handouts (examples: appearance of the sky, lunar phases/eclipses;
and precession). Review any notes given in discussion and lab, and discussion/lab activities, sky
quiz; weight problems, and the questions th
Homework 3 solutions
1. Describe the surfaces of Io and Europa. Why are they so different than
Earths moon? Explain.
Io Io is cold, but very volcanically active moon of Jupiter. We see gas and
material coming out of these volcanoes. The moon is multicolor
Lecture Summary (4/2 and 4/4)
High resolution images of the photosphere show the granulation pattern. Convection
brings energy up from below. Sunspots appear dark because they are cooler than the surrounding
photosphere. The number of sunspots seen in the
ASTR 101 EXAM II April 18
Suggestions for study:
Asteroidsreview: what are they? Where are they? Composition?
Jovian PlanetsJupiter, Saturn, Uranus,Neptune(review Jupiters magnetic field, Saturns rings)
Io, Europa, Titan (tidal heating, surface features)
Malware that can build botnets out of IoT products has gone on to infect twice as many devices
after its source code was publicly released.
The total number of IoT devices infected with the Mirai malware has reached 493,000, up from
213,000 bots bef