Please select the word from the list that best fits the definition.
distance measurements based on the speed of light; used for objects in space.

parallax
light-year
main sequence
H-R diagram
white dwarf
fusion
elliptical galaxy
barred spiral galaxy
irregular galaxy
Milky Way Galaxy

Arise 8 run 1 this means go 8 up and 1 across, which is steepest

So since the snail is moving at 3.6  miles per hour you multiply by 5280 to change it into feet per hour. so you get 36*528 ft per hour. since there are 3600 seconds in an hour, you divide 36*528 by 3600. so simplifying we get 528/100 which is 5.28 ft per second

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.