1. When using the scientific method, a hypothesis that would explain a particular observation
-must be able to be tested.
2. The number 384,000,000 can also be written as
3. Compared to other stars, we find the Sun remarkable because
Ch 14 Web
The new study of observation is being done with new instruments. In the past, old equipment
produced lower pixel images every two hours. Now, every forty-five seconds newer equipment is
producing higher pixel images. The instruments
1. In everyday language, the word theory is not taken seriously. In my own words, I use the
word theory as a well-developed thought that has no scientific evidence behind it. In science,
a theory is a well-developed idea, but it has some back up.
Using the Web Ch. 5
Part One: M31 represents a hotter temperature in the viewing of visible light. It appears to be
cooler in the viewing of ultraviolet light. In the ultraviolet light, I see more detail of the galaxy.
Part Two: False
Ch. 14 Exploration Solutions:
2. A neutrino is a nearly massless, chargeless particle produced by nuclear reactions.
3. yes they are mirror images
4. Using Figure 14.4 to answer all questions in this homework.
A Deuterium nucleus collided with
The temperatures and
After reading chapter one I had an idea of how the universe began, its size, and its age. I
watched both videos recommended. The original video of Powers of Ten gave me some insight. The
Cosmic Voyage gave me insight, reframing, and new i
Go to the Astronomy Picture of the Day app or website
(http:/apod.nasa.gov/apod (Links to an external site.)Links to an external site.) and
look at TWO recent pictures of galaxies. In each case, consider the following
questions: Was the picture taken from
Part 2 Go to the APOD archive (http:/apod.nasa.gov/cgibin/apod/apod_search (Links to an external site.)Links to an external site.) and enter
"false color" in the search box. Examine a few images that come up in the search.
What does false color mean in th
OPTION 1: Answer Part 1 Go to the Astronomy Picture of the Day (APOD) app or
website for July 2, 2012, and watch the video clip "Zooming into the Center of the
Milky Way" (http:/apod.nasa.gov/apod/ap120702.html (Links to an external
site.)Links to an exte
Go to the Astronomy Picture of the Day (APOD) website
(http:/apod.nasa.gov/apod (Links to an external site.)Links to an external site.), pick
out any 3 pictures showing molecular clouds, emission or absorption nebulae, (not
planetary nebulae!) from the pa
Part 1 Go to QUEST's "Journey into the Sun" Web page
(http:/ww2.kqed.org/quest/2010/05/18/journey-into-the-sun/ (Links to an external
site.)Links to an external site.) to watch a short video on the Solar Dynamics
Observatory (SDO), launched in 2010. Why i
18 June 2017
Energy 5->4 compared of energy associated with transition from 5-> 2? Equal
Wavelength 5->4 compared to 5->2? Larger
Frequency 5->4 compared to 5->2?
How Old Are Most Galaxies?
Breaking news! There are more newborn galaxies than we thought!
According to scientist Hootin Ann Holleren, There are more new galaxies
than old. Jokes aside, in a table created by a real person (me), there has
been shown that m
1. The average distance between the Sun and the Earth
-is an astronomical unit (AU).
2. In six months, you will be able to see a different set of stars in the night sky because
-Earth will move.
3. If Earth's axis were tilted twice as much as it
1. From the absorption lines in the spectrum of a cloud, it is possible to determine the
-type of atoms in the cloud.
2. Astronomical object A is more luminous than astronomical object B, but both these objects are exactly
the same in diameter.
1. The largest diameter stars that we see are known as:
2. On an H-R diagram, the most luminous stars are always found at the
3. A parsec is a measure of:
4. Spectral types are used to classify stars according
1. Evidence that many stars form from the same cloud is the existence of:
2. Which of the following molecules would not be found in a molecular cloud?
3. The most abundant element in the universe is:
1. Sunspots are:
temporary features on the photosphere.
2. An aurora is the result of an interaction between:
energetic particles from the Sun and magnetism of Earth.
3. Nuclear fusion is a process in which:
two nuclei combine to become a large
1. The composition of a main-sequence star changes most dramatically at its:
2. A star must continually balance:
-inward gravity with outward pressure.
3. A mass transfer can occur between two stars when:
-the Roche lobe of one completely
1. A space ship traveling at one-half the speed of light (0.5c) beams a laser from its front. If you are
outside of the ship and measured the speed of the laser, what would be the result?
2. Light coming from the surface of a massive obje
1. S0 galaxies are:
-disklike with no spiral arms.
2. Hubbles classification separates what kinds of galaxies?
-spiral and elliptical
3. Besides shape, spiral and elliptical galaxies differ in:
-composition and temperature of their gases.
1. Most of our galaxy is made up of:
2. A globular cluster is:
-a cluster of hundreds of thousands of stars found in our own galaxy.
3. It is difficult to devise a model of the Milky Way based on observations of the sky because:
1. Looking at distant objects:
-allows us to look back in time.
2. To directly measure a distance to a distant galaxy, you would be most likely to use:
-the standard candle of a Type I supernova.
3. A standard candle is:
-an object for which th
Movement in the Night Sky
As the Sun sets and the sky step by step becomes darker, the stars start to show.
They are obviously always there, however while the Sun is sparkling, the
environment radiated by its brightness. The stars' swoon; lights become lo
NASA missions: (only do ONE Part)
Part 1 Go to NASA's Swift Gamma-Ray Burst Mission website
(http:/swift.gsfc.nasa.gov/ (Links to an external site.)Links to an external site.). Locate a
recent result related to supernovae, gamma-ray bursts, or stellar bla