29.2 Flashcards

1
Q

time zone

A

is an area 15 degrees wide in which the time is the same

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2
Q

rotation

A

spinning of earth on its axis an imaginary line drawn from earths north pole to south pole

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3
Q

revolution

A

is the motion of earth in an elliptical orbit around the sun

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4
Q

ecliptic

A

defined as the plane of earths orbit around the sun

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5
Q

solstice

A

occurs when the earths rotational axis is tilted directly towered the sun or away from the sun

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6
Q

equinox

A

earths rotational axis is perpendicular to a line drawn from the center of earths of thr sun.

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7
Q

whi devised a methodof timekeeping around 3000 bc

A

babiloniens

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8
Q

what was the symbol for degree taken from

A

Babylonian symbol from sun

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9
Q

how many degrees does the earth spin in a day

A

360 degrees

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10
Q

how many hours does it take the earth to make one full rotation

A

24 hours

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11
Q

how many derees does the earth spin in an hour

A

15

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12
Q

whaqt direction does the sun ride andf set

A

east west

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13
Q

t or d all the time zones are the exact same size

A

f bc they are modified tol fit around cities, states and country borders, and other key sites

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14
Q

how many time zones are there in the world

A

24

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15
Q

which direction do you do you move to add hours on the clock- subtract

A

east top add an hour

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16
Q

how many time zones are there in the us

17
Q

what are the nemes of the time zones

A

Atlantic/alas kin Pacific mortician central eastern time zone

18
Q

whagt is a solor day

A

sun one day at noon next say

19
Q

what is a sidereal day

A

c a crtian star evn it comes over horizen

20
Q

what are two main reasons for seasons

A

reilotion tilt of the axis

21
Q

which 2 seasons have a solstice

A

winter summer

22
Q

which month is the summer solcist

23
Q

which season is the winter soloist

24
Q

which two seasons are equinox

A

spring fall

25
which month is the fall equinox
march
26
when is the longest day of the year
june 21
27
when is the shortest day of the year
winter december 21
28
when re the days almost 12 hours of day and 12 hours of night
spring and fall equnox march 22 sep 22-23
29
tide
a rise or fall in the oceans surface
30
moon phase
reflects the change in appearance of the moon as seen from earth
31
llunar aclipse
occurs when earth passes between the sun and the moon and casts a shadow on the moon
32
maria
are the dark colored flat lava filled region on the moons surface
33
regonlith
is a layer of dusty lunar material produced by collisions between asteroids and comets and the moon
34
solor eclips
moon between sun and earth