29.2 notes Flashcards
who devised a method of timekeeping around 3000b.c
The babylonians
what was the symbol for degree taken from
it was the babylonian symbol for the sun
how many degrees does the earth spin in one day
360 degrees
how many hour does it take the earth to make one full rotation
24 hours
how many degrees does the earth spin in one hour
15 degrees
what direction does the sun rise
from the east
what direction does the sun set
in the west
true or false: All time zones are the exact same size
false they are modified to fit around cities, states, country borders, and and other key sites
how many time zones are there in the world
24 time zones
which direction do you move to add hours to the time
east
which direction do you move to subtract hours from the time
west
how many time zones are in the united states
6 time zones
what are the names of the time zones
what is a solar day
a solar day is the movement of the sun from noon one day to noon the next day
what is a sidereal day
the time required for the Earth to rotate once relative to the background of the stars
