The distance between starts is usually measured in
a. light-years
b. kilometers
c. astronomical units
d. miles

physical properties used to measure stars include
a. mass
b. brightness
c. size
d. all of the above

an h-r diagram
a. is a map of the positions of the stars
b. graphs stars according to their size and distance
c. lists every known star
d. graphs a sample of stars according to surface temperature an absolute brightness

the apparent change in position of an object with respect to a distant background is
a. light-year
b. parallax
c. luminosity
d. absorption

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.