DOC PREVIEW
MASON ASTR 302 - Examination #1 Answers

This preview shows page 1-2-3 out of 10 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 10 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 10 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 10 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 10 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

1 ASTRonomy 302 Examination #1 Fall 2011 ANSWERS I understand that this examination period goes from 1:30 PM through 2:45 PM, and that I may be required to stay in my seat for the entire period of time. Also, I have not received, nor given any aid, nor assistance, nor answers, nor questions to anyone else during this examination period. I understand that any violation of the GMU honor code will result in my being reported directly to the honor committee, without warning. I understand that any honor code violation can cause me to fail the course, be suspended, and/or be expelled from the university; and, it will automatically be entered into my official records. Name: _____________________ Print _____________________ Signature _____________________ Student ID _____________________ Date 1 The period of a planet revolving around the Sun can be found if we know its *A average distance from the Sun B density C mass D period of rotation E More than one of the above is needed. 2 At what latitude on Earth is the North Celestial Pole at your horizon? A the Arctic Circle *B the equator C the North Pole D the South Pole E there are many latitudes where this occurs 3 Galileo's observations of the phases of Venus helped convince him that A the Moon goes around the Earth B the Sun goes around the Earth C Venus goes around the Earth *D Venus goes around the Sun E Ptolemy's model of the solar system was correct 4 The angular measure of an object in the sky clockwise from the North, is called its *A azimuth B altitude C declination D latitude E right ascension 5 The angular distance of an object in the sky above or below the Celestial Equator is called its A azimuth B altitude *C declination D latitude E right ascension2 6 The ecliptic may be considered as A the line passing from north to south directly overhead B the orbit of the Moon C the path of a star in the sky D the path of the Earth's north pole in the sky *E the apparent path of the Sun in the sky 7 Which of the following statements about the Copernican solar system model is CORRECT? A it did away with the need for epicycles B it was the first time ever that the Sun was considered at the center of the solar system C it provided a physical explanation of why the planets moved D it utilized elliptical motion *E None of the above is correct. 8 Suppose you are a space shuttle astronaut taking a space walk. Your tether breaks and the jets on your backpack are out of fuel. How can you get back to the shuttle alive? A flap your arms B lean closer to the center of mass *C throw your backpack directly away from the shuttle D wait for gravity to pull you and the shuttle together E start spinning yourself 9 If the Earth's axis were not tilted with respect to its orbital plane, then A a mean solar day would be longer B a sidereal day would be longer C the tides would be much stronger *D there would be virtually no seasons E the period of revolution and rotation would be equal 10 What is the phase of the Moon at point 7 in the diagram? A first quarter B full *C new D third quarter E waning crescent 11 Tycho Brahe's main contribution to astronomy was his A calculation of the orbits of the planets B model of the solar system *C observations of the planets' positions D textbook on the solar system and its origin E collection of anecdotes about Galileo3 12 Polaris is an important star because A it can sometimes be seen during the day B it displays retrograde motion *C it is very near the North Celestial Pole D it marks the vernal equinox E its position in the sky indicates the season 13 Ptolemy is best remembered for *A developing the geocentric solar system model B proving the Earth is spherical C showing that the orbits of the planets are ellipses D observing the positions of the planets E developing the heliocentric solar system model 14 Based on Newton's first law, if a body is moving in a curved path, then A it is being controlled by gravity *B there is a force acting on it C there is no equal and opposite reaction D there is no force acting E the body's position cannot be determined precisely 15 Which of the following groups have electromagnetic wavelengths, all of which are longer than visible light: A ultraviolet, microwave, radio B ultraviolet, x-ray, gamma ray *C infrared, microwave, radio D all of the above have wavelengths shorter than visible light E none of the above have wavelengths with all shorter than visible light 16 Which of the following groups have electromagnetic wavelengths, all of which are shorter than visible light: A ultraviolet, microwave, radio *B ultraviolet, x-ray, gamma ray C infrared, microwave, radio D all of the above have wavelengths shorter than visible light E none of the above have wavelengths with all shorter than visible light 17 Which of the following have photons of the highest energies: A 10 Watt microwaves B 10 Watt red light *C 10 Watt blue light D 100 Watt red light E 100 Watt green light 18 The Stefan-Boltzmann Law relates which two properties of an object? A temperature and velocity B temperature and peak wavelength *C temperature and energy radiated D focus and wavelength E Doppler shift and wavelength 19 Wien's Law relates which two properties of an object? A temperature and velocity *B temperature and peak wavelength C temperature and energy radiated D focus and wavelength E Doppler shift and wavelength4 20 If you turn up the temperature of a thermostat from 300 Kelvin to 600 Kelvin, how much more energy will be required to heat the chamber? A 64 times B 256 times C 4 times D 81 times *E 16 times 21 If you apply a high voltage across electrodes in a chamber of hydrogen, the type of spectrum you will see in a spectroscope looking at the gas is: *A an emission spectrum B an absorption spectrum C a continuous spectrum D all of the above spectra E none of the above spectra 22 If you allow sunlight to pass through a high resolution spectrograph you will see A an emission spectrum *B an absorption spectrum C a continuous spectrum D all of the above spectra E none of the above spectra 23 You take an object and move it twice the distance that it was from a light source. The amount of light that the object will now receive from the source is A twice as much as it did originally B one-third (1/3) times as much as it did originally C one-half (1/2) as much as it did originally *D one-quarter


View Full Document
Download Examination #1 Answers
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Examination #1 Answers and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Examination #1 Answers 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?