earth science test 1
Terms
undefined, object
copy deck
- rotation
- the spinning of the earth around its axis
- what is an axis
- the imaginary line running from pole to pole through the center of the Earth
- what does this rotation cause?
- night and day
- how much is the axis tilted from the elliptic?
- 23.5
- ELLIPTIC
- plane that the earth orbits the sun
- revolution
- the journey of the earth around the sun
- 1 revolutions =
- 365.25 days, which is why we have an extra day to make up the difference
- what does the tilt of the earth cause?
- the angle that the suns rays hit the earth to change during the year
- the higher the angle ....
- the warmer it gets
- solar angle/ altitude of the sun
- the position of the sun in the noon sky
- in winter wheres the sun?
- at its lowest point in the noon sky
- in the summer where is the sun?
- at its hightest point at noon
- where is the sun in fall and spring?
- in between
- Closer the solar rays are to 90 degrees
- the more the ground absorbs and temp inc, and the farther away the less it absorbs and temp dec
- the solar angle also causes
- the day length to change over time
- What was the sun viewed as in pre-historic times?
- a god
- stonehenge
- monuments built to it based on 4 days of the year
- solstice
- the sun is directly overhead at noon at 23.5 degrees north or south
- special latitudes:
- tropic of cancer: 23.5 degrees north tropic of copricurn: 23.5 degrees south
- why is the ground a heat source for the air?
- bc the ground absorbs radient energy
- as alltitude increases temature ...
- decreases
- normal lapse rate :
- rate tempature decreases with alltitude
- normal lapse rate is _____ per _____feet
- 3.5 degrees farenhieght per 1000 feet
- Winston-Salem elevation =
- 800 ft
- What do large bodies of water seem to moderate?
- climates
- interior locations tend to
- have large temature deifferences from winter to summer
- water ______ slower and cools _____so it modifies what?
- heats, slower tempatures in areas near oceans and other large bodies of water
- water absorbs energy to __ ft. land absorbs energy to __ ft.
- 10, a few
- evaporatio of water in summer also:
- helps cool costal areas
- leeward coast:
- prevailing winds blow from land out to sea
- leeward winds casue ______ _____ to not be as strong
- moderating effects
- windward coast:
- prevailing winds blow from ocean onto shores
- windward winds have a much stronger ________ _ _________
- moderation of temps
- Northern Hem. has ___% of land Shouthern Hem. has ___% of land
- 39 , 19
- An important tool in predicting daily weather patterns is to :
- know the weather in surrounding areas
- if you know the temp. in an area "up weather" from you then:
- you can predict the weather youll have in a few days
- we look to the _____ ______ of the _________ or our tempature predictions
- lower latitudes of the midwest
- In the past forecasters had to
- predict from the word of mouths from travelers
- Unfortuetley the travelers often
- arrived after the weather would
- When the telegraph was invented
- it was possible for the forecasters to "beat the weather"
- In 1870 who was presdent and what was created?
- President Grant began in the War Department and became to be National Weather Service
- why was the National Weather Station put in military basses?
- bc it was felt that military discipline was needed for the nessecary promtness, regularity, and accuracy of the required observations
- where was the first weather stations?
- military bases
- isotherm
- lines on a map connecting the same tempatures