science
posted by Samantha .
How long is day and how long is night?
PLEASE HELP ME!
thanks
PLEASE HELP ME!!
We usually think, in the United States, of a day being 12 hours and night being 12 hours; however, as you well know, the actual hours of daylight and night time change daily. Also, day time and night time change with the location on the earth.
Respond to this Question
Similar Questions

need HELPwith 2 questions!!
How long is day and how long is night? Does the sun come up in the morning all over the world? 
math
you got 8 hours of sleep on monday night and 7 hours of sleep on tuesday night on wednesday you only got 4 hours of sleep because you were up late working on an english paper on thursday and friday you got 9 hours of sleep each night … 
statistics
researchers believe a new sleep on average 10 hours per night ( ยต = 10), with a population standard deviation of 2.3 hours(s=2.3) it is assume that the number of hours of sleep per night is normal distributed , however you think this … 
AP Statistics
A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of … 
Health
Jill sleeps 8 hours each night. Spends 80% working on communicating & 60% of time listening. How many hours a day does she spend listening? 
math
Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25? 
math
Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25? 
Statistics
Suppose that hours of sleep per night for single adults between 30 and 40 years of age are normally distributed with a mean of 6.7 hours and a standard deviation of 1.1 hours. What proportion of adults sleep longer than 4.5 hours per … 
Math
Brian was training to run a marathon. During the three day period before the race he decided he would train for 11 hours. If he trained for 2 3/5 hours first day and 2 9/10 second day, how many hours would he need to train third day. … 
Math
Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a more convenient choice 23 or 25?