PreparED Study Materials

Exam Study Guide

Author: Student Professor: Term:

These flashcards cover what will be on the first exam for the class. It covers from chapters 1-4 in the text book and lectures.

(Be the first to review)


scientific method

trying to find out why something happened 


opening between two intersecting lines 

powers of 10 notation

when multiplying exponents add when dividing exponents subtract

small angle formula

D= angle(d)/ 206265D=linear sizeangle=angular size in arc secondsd= linear distance

compound units


astronautical unit

1AU 1.496x10^8 km distance between sun and earth 


measure the distance between stars 3.09 x 10^13 km 1AU and 1 arc second 

altitude azimuth coordinate system

measure the altitude of something in the sky using the horizon and compass 

latitude and longitude

latitude- angular distance above or below the earths equator as measured from the center of the earthlongitude- angular distance between a circle passing through the North Pole and Greenwich England

declination and right accession 

declination- latitude like coordinate on the celestial sphereright accession- longitude like coordinate on the celestial sphere 360 degrees= 24hours15 degrees= 1 hour

earths tilt

23 1/2 degrees


wobbling of earth as it rotates around the sun 


the path the earth takes was it revolves around the sun

sidereal time

based on the stars


the moon shines by reflected light from the sun

synodic time

based on the sun

solar eclipse

moon moves infant of the sun, new phase, line of nodes points to sun

lunar eclipse 

oon moves through the earths shadow, full phase, line of nodes points to sun 

magnitude system

measures the brightness of stars

geocentric cosmology

earth centered theory of the universe thought of by Ptolemy 

retrograde motion

apparent backwards(westward) motion of the planets proves that earth is not the center of the universe

heliocentric model of cosmology

sun centered model of the universe found by Nicholas Capernicus 

elongation angle

angle when inferior planets are passing the sun and you can see it

Tycho Brahe

first person to discover that stars die 

Keplers first law of planetary motion 

planets orbit in an elipse

Keplers second law of planetary motion 

a planet around the sun sweeps out equal areas in equal times

Keplers third law of planetary motion 

the squares of the sidereal periods of the planets are proportional to the cubes of their semi major axis P^2= a^2


distance over time

average or instantaneous speed

change in distance over change in time

vector quantity

how much and which direction

newtons first law

law of inertia a body at rest remains at rest unless an outside force is acted upon it

newtons second law 

force equals mass times accelerationf= m x a

newtons third law

whenever one object exerts force on another object the second objects exerts equal but opposite force on the first object 

conservation of energy

you cannot create or destroy energychemical energykinetic energygravitational/ potential energy

general theory of relativity

gravity is the result of an object following the curvature of 4-d space time

3 properties of a black hole

massrotationelectric fields

Add to cart

AST 1002 also has

Top Selling Study Tools



Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now



Sign up for access to all content on our site!

Or login if you already have an account


Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back